httpd: NULL pointer dereference via specially crafted request

A flaw was found in the moddavlock module of httpd. This vulnerability allows a remote unauthenticated attacker to crash the server due to a NULL pointer dereference via a specially crafted request...

httpd: Apache HTTP Server: Heap-based Buffer Overflow via malicious backend servers

A flaw was found in Apache HTTP Server. This heap-based buffer overflow vulnerability can be exploited by a malicious backend server when using ProxyPassReverseCookie directives. This could lead to a denial of service DoS condition, making the server unavailable to legitimate users...

httpd: mod_authn_socache: NULL pointer dereference can cause a child process crash

A flaw was found in the modauthnsocache module of httpd. This vulnerability allows an unauthenticated remote user to crash a child process due to a NULL pointer dereference when the server is operating in a caching forward proxy configuration...

httpd: Apache HTTP Server: Denial of Service in mod_proxy_ftp via attacker-controlled FTP server

A flaw was found in the modproxyftp module of the Apache HTTP Server. A remote attacker, by controlling a backend File Transfer Protocol FTP server, can trigger an infinite loop. This vulnerability, categorized as a Loop with Unreachable Exit Condition, leads to a Denial of Service DoS for the...

httpd: mod_proxy_ajp: off-by-one out-of-bounds reads in AJP getter functions

A flaw was found in the modproxyajp module of httpd. When processing AJP Apache JServ Protocol messages, the AJP getter functions attempt to read data beyond the allocated buffer size, allowing an attacker or a malformed request to cause an out-of-bounds read. This issue leads to a denial of...

httpd: Apache HTTP Server: Arbitrary code execution or denial of service via use-after-free in mod_ldap per-directory configuration

A flaw was found in Apache HTTP Server when using the modldap module in a per-directory configuration. This use-after-free vulnerability allows a remote attacker to potentially execute arbitrary code or cause a denial of service DoS due to improper memory handling. This could lead to system...

Important: Red Hat Security Advisory: httpd security update

An update for httpd is now available for Red Hat Enterprise Linux 9.2 Update Services for SAP Solutions. Red Hat Product Security has rated this update as having a security impact of Important. A Common Vulnerability Scoring System CVSS base score, which gives a detailed severity rating, is...

httpd: Apache HTTP Server: Denial of Service via crafted regular expressions

A flaw was found in Apache HTTP Server. This buffer underwrite vulnerability occurs when processing crafted regular expressions in the server's configuration. An attacker could potentially exploit this to cause a denial of service...

httpd: mod_proxy_ajp: heap-based buffer over-read and memory disclosure in ajp_parse_data()

A flaw was found in the modproxyajp module of httpd. When processing AJP Apache JServ Protocol messages, the ajpparsedata function attempts to read data beyond the allocated buffer size, allowing an attacker or a malformed request to cause a heap-based buffer over-read. This issue potentially lea...

Apache HTTP Server: mod_proxy_ajp: Apache HTTP Server mod_proxy_ajp: Arbitrary code execution via heap-based buffer overflow

A flaw was found in modproxyajp of Apache HTTP Server. This heap-based buffer overflow vulnerability allows a remote attacker, by connecting to a malicious AJP Apache JServ Protocol server, to send a specially crafted message. This message can cause modproxyajp to write attacker-controlled data...

httpd: incomplete fix for CVE-2023-38709

A flaw was found in httpd. The response headers are not sanitized before an HTTP response is sent when a malicious backend can insert a Content-Type, Content-Encoding, or some other headers. These issues lead to HTTP response splitting. This CVE provides a "complete" fix for CVE-2023-38709...

crypto/x509: golang: Go crypto/x509: Certificate validation bypass due to incorrect DNS constraint application

A flaw was found in the crypto/x509 package within Go golang. When verifying a certificate chain, excluded DNS Domain Name System constraints are not correctly applied to wildcard DNS Subject Alternative Names SANs if the case of the SAN differs from the constraint. This oversight could allow an...

net: golang: Go net package: Denial of Service via long CNAME response in LookupCNAME

A flaw was found in the net package of Go golang, specifically when using the LookupCNAME function with the cgo DNS resolver. A remote attacker could exploit this by providing a very long Canonical Name CNAME response. This can trigger a double-free of C memory, leading to a crash and a Denial of...

golang.org/x/net/idna: golang: net/http: golang.org/x/net/idna: Privilege escalation via incorrect Punycode label processing

A flaw was found in golang.org/x/net/idna. ToASCII and ToUnicode incorrectly accept Punycode-encoded labels that decode to an ASCII-only hostname for example, xn--example-.com returns example.com instead of an error. Applications that validate the ASCII form then convert to Unicode may grant acce...

net/url: golang: golang net/url: Denial of Service from quadratic complexity in path resolution

A flaw was found in net/url, a component of golang. This vulnerability arises when resolving relative paths that contain numerous parent directory '..' segments. A remote attacker could exploit this by providing a specially crafted path, leading to quadratic time complexity and excessive memory...

crypto/tls: golang: Golang crypto/tls: Denial of Service via indefinite KeyUpdate messages

A flaw was found in the crypto/tls package, part of golang. A malicious client can exploit this vulnerability by continuously sending KeyUpdate messages to a server. This forces the server to perform indefinite key derivation operations, leading to resource exhaustion and a Denial of Service DoS...

Important: Red Hat Security Advisory: git-lfs security update

An update for git-lfs is now available for Red Hat Enterprise Linux 10.0 Extended Update Support. Red Hat Product Security has rated this update as having a security impact of Important. A Common Vulnerability Scoring System CVSS base score, which gives a detailed severity rating, is available fo...

crypto/x509: golang: Go crypto/x509: Denial of Service via inefficient certificate chain validation

A flaw was found in Go's crypto/x509 package. A remote attacker could exploit this by presenting a specially crafted certificate chain containing a large number of policy mappings. This inefficient validation process consumes excessive resources, which can lead to a denial of service DoS for...

encoding/asn1: golang: Go encoding/asn1: Denial of Service via excessive recursion in Unmarshal

A flaw was found in the encoding/asn1 package in Go. An attacker could provide a specially crafted, deeply-nested Abstract Syntax Notation One ASN.1 structure, leading to excessive recursion during the Unmarshal operation. This could result in stack exhaustion and a Denial of Service DoS conditio...

tomcat: Improper Handling of Exceptional Conditions

A vulnerability was found in Apache Tomcat. When processing an HTTP/2 stream, Tomcat did not handle some cases of excessive HTTP headers correctly. This issue led to a miscounting of active HTTP/2 streams, which in turn led to using an incorrect infinite timeout that allowed connections to remain...

tomcat: Denial of Service in Tomcat

A vulnerability was found in Tomcat. Under certain configurations on any platform, this flaw allows an attacker to cause an OutOfMemoryError by abusing the TLS handshake process...

tomcat: security constraint bypass with HTTP/0.9

A flaw was found in Tomcat. An improper input validation vulnerability allows an attacker to bypass security constraints. Specifically, if a security constraint is configured to permit HEAD requests to a URI but deny GET requests, a malformed or specification invalid HEAD request using the HTTP/0...

Apache Tomcat: Apache Tomcat: HTTP Request/Response Smuggling via invalid chunk extension

A flaw was found in Apache Tomcat. A remote attacker could exploit an inconsistent interpretation of HTTP requests, known as HTTP Request/Response Smuggling, by sending a specially crafted request with an invalid chunk extension. This vulnerability allows an attacker to manipulate the way HTTP...

Apache Tomcat: Apache Tomcat: Open Redirect vulnerability via LoadBalancerDrainingValve

A flaw was found in Apache Tomcat. This open redirect vulnerability allows an attacker to redirect a user to an untrusted site. This occurs through the LoadBalancerDrainingValve, which can be exploited to manipulate URL redirection. The primary impact is that users may be unknowingly directed to...

Apache Tomcat: Apache Tomcat: Information disclosure via sensitive data in log files

A flaw was found in Apache Tomcat. The cloud membership for clustering component was vulnerable to the insertion of sensitive information into log files. This vulnerability could lead to the exposure of the Kubernetes bearer token, which is a credential used for authentication within a Kubernetes...

tomcat: Apache Tomcat: Denial of Service due to uncontrolled resource allocation

In Apache Tomcat, no limit was enforced on the request body for WebDAV LOCK or PROPFIND requests which were available to unauthenticated users. This allows a remote attacker to consume excessive resources, leading to Denial of Service DoS, making the affected system unavailable to legitimate user...

tomcat-coyote: Apache Tomcat: Information disclosure due to HTTP Authentication Header exposure during WebSocket authentication.

A flaw was found in Apache Tomcat. During WebSocket authentication, the HTTP Authentication Header can be exposed to unexpected hosts. This vulnerability leads to information disclosure, potentially allowing an attacker to gain access to sensitive authentication credentials...

tomcat: Apache Tomcat: Authentication bypass via missing critical step in JNDIRealm GSSAPI configuration

A flaw was found in Apache Tomcat. When the JNDIRealm was configured to authenticate binds using GSSAPI, an attacker could exploit a missing critical step in the authentication process. This allowed the attacker to bypass password verification and authenticate without providing the correct...

tomcat: Apache Tomcat: Insufficient documentation for EncryptInterceptor may lead to insecure configurations

A flaw was found in Apache Tomcat. Insufficient technical documentation regarding the secure configuration of the EncryptInterceptor component may lead to deployments with insecure settings. This vulnerability could allow an attacker to exploit misconfigurations that arise from unclear guidance,...

tomcat-coyote: tomcat: Improper Authorization allows security bypass

In Apache Tomcat, when multiple security constraints defined an HTTP method constraint for the same extension pattern, only the first method constraint was applied. A remote attacker could exploit this to bypass intended security restrictions for information or actions within the application...

Apache Tomcat: Apache Tomcat: Incorrect control flow in rewrite valve allows unexpected rule processing

A flaw was found in Apache Tomcat's rewrite valve. This vulnerability involves an incorrect control flow implementation where, during the processing of rewrite rules, if the first condition in an OR chain matched, subsequent non-OR conditions were unexpectedly skipped. This can lead to unintended...

tomcat: Apache Tomcat: Misleading security logs due to incorrect control flow

A flaw was found in Apache Tomcat. Due to an always-incorrect control flow implementation, special roles and empty authorization constraints were not accurately included when the effective web.xml configuration was logged. This could lead to a security oversight where administrators might...

tomcat-catalina: Apache Tomcat: Improper Handling of Case Sensitivity in LockOutRealm

In Apache Tomcat, LockOutRealm mishandled case sensitivity in usernames, resulting in less effective blocking of brute force attacks...

tomcat: org.apache.tomcat/tomcat-catalina: Apache Tomcat: Denial of service

A denial of service flaw has been discovered in Apache Tomcat. If an error occurred including exceeding limits during the processing of a multipart upload, temporary copies of the uploaded parts written to disc were not cleaned up immediately but left for the garbage collection process to delete...

Apache Tomcat: Apache Tomcat: Information disclosure due to improper encoding in JsonAccessLogValve

A flaw was found in the JsonAccessLogValve component of Apache Tomcat. This improper encoding or escaping of output vulnerability could allow an attacker to inject specially crafted data into log files. This could lead to information disclosure or other unintended consequences when the logs are...

tomcat-coyote: Apache Tomcat: HTTP/2 request headers not validated

Apache Tomcat did not validate HTTP/2 request headers, triggering unexpected application behavior, as applications may presume that header values exposed through the Servlet API would be valid...

tomcat-coyote: Apache Tomcat: Authentication bypass via digest authentication

A flaw was found in Apache Tomcat. When DIGEST authentication was configured, any user not known to the configured Realm would be authenticated if they presented the password "null". This allows a remote attacker to bypass security controls...

tomcat: Apache Tomcat: Cross-Site Scripting vulnerability in number guess example

A flaw was found in Apache Tomcat. This vulnerability, known as Cross-Site Scripting XSS, allows a remote attacker to inject malicious scripts into the 'number guess example' web page. When other users view the compromised page, these scripts can execute in their web browsers. This could lead to...

tomcat: Apache Tomcat: Error condition not handled when configuring CRLs

A flaw was found in Apache Tomcat. When configuring Certificate Revocation Lists CRLs for a FFM presumably a specific type of connector, the system fails to detect and act upon an error condition. This oversight could lead to unexpected behavior or a security bypass, as the intended security...

org.apache.tomcat/tomcat-catalina: tomcat: Apache Tomcat: session fixation via rewrite valve

A session fixation vulnerability has been identified in Apache Tomcat, affecting its rewrite functionality. If the rewrite valve is enabled for a web application, an attacker can craft a specific URL. If a victim clicks on this malicious URL, their subsequent interaction with the resource will...

tomcat: Apache Tomcat: Information disclosure via AJP secret timing discrepancy

A flaw was found in Apache Tomcat. The AJP secret was comparable in non-constant time, allowing an attacker on the local network to mount a timing attack to determine the AJP secret, which may lead to unauthorized access or other security bypasses...

Important: Red Hat Security Advisory: tomcat9 security update

An update for tomcat9 is now available for Red Hat Enterprise Linux 10.0 Extended Update Support. Red Hat Product Security has rated this update as having a security impact of Important. A Common Vulnerability Scoring System CVSS base score, which gives a detailed severity rating, is available fo...

tomcat: Apache Tomcat: Security constraint bypass for CGI scripts

A flaw was found in the CGI servlet component of Apache Tomcat. This vulnerability allows a security constraint bypass via improper handling of case sensitivity in the pathInfo component of a URI mapped to the CGI servlet...

org.apache.tomcat/tomcat-juli: tomcat: Apache Tomcat: console manipulation

An improper input neutralization flaw has been discovered in Apache Tomcat. Tomcat did not escape ANSI escape sequences in log messages. If Tomcat was running in a console on a Windows operating system, and the console supported ANSI escape sequences, it was possible for an attacker to use a...

tomcat: Client certificate verification bypass due to virtual host mapping

A certificate validation flaw has been found in Apache Tomcat. omcat did not validate that the host name provided via the SNI extension was the same as the host name provided in the HTTP host header field. If Tomcat was configured with more than one virtual host and the TLS configuration for one ...

Apache Tomcat: Apache Tomcat: Authentication bypass due to CLIENT_CERT soft fail misconfiguration

A flaw was found in Apache Tomcat and Apache Tomcat Native. When CLIENTCERT authentication is configured with "soft fail" disabled, the authentication process may not correctly fail in certain scenarios. This vulnerability could allow an attacker to bypass expected client certificate...

Apache Tomcat: Apache Tomcat: Improper Input Validation vulnerability due to incomplete fix

A flaw was found in Apache Tomcat. This improper input validation vulnerability stems from an incomplete fix for a previous security issue CVE-2025-66614. This flaw may allow an attacker to bypass security controls or cause unexpected behavior within the application...

tomcat: Apache Tomcat: Replay attack via improper authentication in EncryptionInterceptor

A flaw was found in Apache Tomcat. An improper authentication vulnerability in the EncryptionInterceptor component allows a remote attacker to perform a replay attack. This could lead to unauthorized access or manipulation of data within the cluster component...

tomcat: Apache Tomcat: Improper Authorization Allows Security Constraint Bypass

A flaw was found in Apache Tomcat where access control rules for the default servlet are improperly handled. An attacker can exploit this issue to bypass specific HTTP method restrictions, potentially gaining unauthorized access to protected application resources...

tomcat: Apache Tomcat: Security constraint bypass via improper URL encoding in rewrite valve

A flaw was found in Apache Tomcat. This vulnerability, located in the rewrite valve, is due to improper handling of URL encoding hex encoding. A remote attacker could exploit this to bypass security constraints in certain configurations, potentially gaining unauthorized access or performing actio...