CVE-2026-31635-DirtyDecrypt

CVE-2026-31635 · DirtyDecrypt Linux 内核 RxRPC/GSSAPI 解密路径上的本地权限提升漏洞。 rxgkdecryptskb 中缺少 skbcowdata 检查，允许无特权的本地攻击者破坏页缓存页面并覆盖只读文件的内存内容。 目录 概述 快速开始 验证你的系统 漏洞利用总结 受影响系统 如何使用本仓库 缓解措施 常见问题 仓库布局 参考资料 概述 本仓库包含 CVE-2026-31635 的研究材料和概念验证代码，这是 Linux 内核 net/rxrpc/rxgk.c 中的一个本地权限提升漏洞。 该漏洞发生在 RxRPC 使用 AES-CBC...

gssapi-abuse

gssapi-abuse gssapi-abuse は、私の DEF CON 31 の講演の一環として公開されました。この悪用ベクトルに関する完全な記事はこちらにあります: A Broken Marriage: Abusing Mixed Vendor Kerberos Stacks このツールには2つの機能があります。 1つ目は、Active Directory に参加しており、SSH で GSSAPI 認証を提供する非 Windows ホストを列挙する機能です。 2つ目の機能は、正しい前方および/または逆引き DNS エントリを持たない GSSAPI 悪用可能ホストに対して、動的 D...

pivotnacci

pivotnacci Pivot into the internal network by deploying HTTP agents. Pivotnacci allows you to create a socks server which communicates with HTTP agents. The architecture looks like the following: This tool was inspired by the great reGeorg. However, it includes some improvements: Support for...

Astra Linux – Vulnerability in Heimdal

The fix for CVE-2022-3437 involved changing the memcmp function to run in constant time, as well as providing a workaround for a compiler bug by adding comparisons of the result with the value “!= 0” to the memcmp function. When these patches were backported to the heimdal-7.7.1 and heimdal-7.8.0...

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: 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...

CVE-2026-14681

A flaw was found in PostgreSQL. Improper enforcement of message integrity in PostgreSQL's GSSAPI Generic Security Service Application Program Interface support allows a user to negotiate GSSAPI contrary to pghba.conf rules by initiating a direct TLS Transport Layer Security connection. This enabl...

PostgreSQL 17.x < 17.11 / 18.x < 18.6 GSSAPI Improper Message Integrity Enforcement

The version of PostgreSQL installed on the remote host is 17 prior to 17.11 or 18 prior to 18.6. As such, it is potentially affected by a security bypass vulnerability: - Improper enforcement of message integrity in PostgreSQL GSSAPI support allows a user to negotiate GSSAPI contrary to pghba.con...

CVE-2026-56854 Source-address critical option not enforced for non-public-key auth callbacks in golang.org/x/crypto/ssh

The source-address critical option in the Permissions returned by an authentication callback was only enforced for the PublicKeyCallback and VerifiedPublicKeyCallback paths, extending the fix for CVE-2026-46595. Permissions returned by the PasswordCallback, KeyboardInteractiveCallback,...

CVE-2026-75159

An unauthenticated client that can reach a MongoDB Connector for BI deployment configured with Kerberos authentication may cause mongosqld to terminate when a crafted authentication exchange encounters a specific GSSAPI error-handling condition. This can interrupt BI Connector availability until...

CVE-2026-75159 MongoDB BI Connector Improper Memory Handling During Failed Kerberos Authentication May Cause Process Termination

An unauthenticated client that can reach a MongoDB Connector for BI deployment configured with Kerberos authentication may cause mongosqld to terminate when a crafted authentication exchange encounters a specific GSSAPI error-handling condition. This can interrupt BI Connector availability until...

EUVD-2026-67083

An unauthenticated client that can reach a MongoDB Connector for BI deployment configured with Kerberos authentication may cause mongosqld to terminate when a crafted authentication exchange encounters a specific GSSAPI error-handling condition. This can interrupt BI Connector availability until...

CVE-2026-75159

CVE-2026-75159 affects MongoDB Connector for BI (mongosqld) deployments configured with Kerberos authentication . An unauthenticated, network-reachable client can trigger a specific GSSAPI error-handling condition during a crafted authentication exchange, causing mongosqld to terminate. This inte...

MongoDB BI Connector Improper Memory Handling During Failed Kerberos Authentication May Cause Process Termination

An unauthenticated client that can reach a MongoDB Connector for BI deployment configured with Kerberos authentication may cause mongosqld to terminate when a crafted authentication exchange encounters a specific GSSAPI error-handling condition. This can interrupt BI Connector availability until...

PT-2026-82549

An unauthenticated client that can reach a MongoDB Connector for BI deployment configured with Kerberos authentication may cause mongosqld to terminate when a crafted authentication exchange encounters a specific GSSAPI error-handling condition. This can interrupt BI Connector availability until...

Astra Linux – Vulnerability in curl

A authentication bypass vulnerability exists in libcurl version 8.0.0, particularly in the connection reuse feature. This vulnerability allows for the reuse of previously established connections with incorrect user permissions, due to a failure to check for changes in the CURLOPTGSSAPIDELEGATION...

Astra Linux – Vulnerability in libssh

A flaw was discovered in libssh. The API function sshgethexa is vulnerable to a denial-of-service attack when processing zero-length inputs. This vulnerability can be exploited remotely by an attacker during GSSAPI Generic Security Service Application Program Interface authentication, if the...

Astra Linux – Vulnerability in Heimdal, Samba

A heap-based buffer overflow vulnerability was discovered in Samba, specifically within the GSSAPI unwrapdes and unwrapdes3 routines of Heimdal. The DES and Triple-DES decryption routines in the Heimdal GSSAPI library allow for a length-limited write buffer overflow on memory allocated by malloc,...

Astra Linux – Vulnerability in krb5

A vulnerability in the MIT Kerberos implementation allows for GSSAPI-protected messages that use RC4-HMAC-MD5 to be spoofed, due to weaknesses in the MD5 checksum design. If RC4 is preferred over stronger encryption methods, an attacker could exploit MD5 collisions to forge message integrity code...

Astra Linux – Vulnerability in bind9

In BIND 9.5.0 - 9.11.29, 9.12.0 - 9.16.13, and versions BIND 9.11.3-S1 - 9.11.29-S1 and 9.16.8-S1 - 9.16.13-S1 of the Supported Preview Edition, as well as release versions 9.17.0 - 9.17.1 of the BIND 9.17 development branch, BIND servers are vulnerable if they are running an affected version and...