636 matches found
libevent: libevent: Multiple HTTP Parser Bugs Enable Request Smuggling
A flaw was found in libevent. The evhttp parser in libevent's http.c component inconsistently handles HTTP Transfer-Encoding headers and chunked framing. This inconsistency allows an unauthenticated remote attacker to desynchronize request boundaries when libevent is used behind a proxy. Successf...
libevent: Libevent: Denial of Service via malformed RPC data
A flaw was found in Libevent, an event notification library. A remote attacker could exploit an out-of-bounds read vulnerability in the decodetaginternal function by sending specially crafted, attacker-controlled tagged RPC Remote Procedure Call data. This could lead to a denial of service, causi...
libevent: Libevent: Denial of Service via integer conversion error in `evtag_unmarshal_header`
A flaw was found in Libevent. An incorrect integer conversion in the evtagunmarshalheader function allows a remote attacker to provide a specially crafted payload length. This can lead to a wrapped large allocation request, resulting in a denial of service DoS for the affected system...
libevent: Libevent: Arbitrary code execution via heap out-of-bounds write in AF_UNIX handling
A flaw was found in Libevent. A heap out-of-bounds write vulnerability in the buffereventsocketsetconnaddress function allows an unauthenticated local peer to achieve arbitrary code execution. By connecting to an AFUNIX listener, an attacker can overwrite critical heap data, leading to memory...
Important: Red Hat Security Advisory: libevent security update
An update for libevent is now available for Red Hat Enterprise Linux 9. 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 for each vulnerability from...
libevent: Libevent: Memory corruption due to use-after-free
A flaw was found in Libevent, an event notification library. A use-after-free vulnerability exists in the evbufferaddbufferreference function when it processes an output buffer with a zero length. This can lead to a dangling pointer, which an attacker could exploit to cause memory corruption or...
libevent: Libevent: HTTP header handling bugs create risk of access control bypass.
A flaw was found in libevent. The evhttpdecodeuriinternal function in http.c decodes percent-encoded %00 bytes into literal NUL characters without rejecting them, allowing an attacker to craft a URI such as /admin/secret%00.jpg where extension-based access checks see .jpg but the server processes...
Important: Red Hat Security Advisory: libevent security update
An update for libevent is now available for Red Hat Enterprise Linux 10. 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 for each vulnerability from...
libevent: Libevent: HTTP header smuggling allows authorization bypass or cache poisoning
A flaw was found in Libevent, an event notification library. An unauthenticated remote attacker can exploit a vulnerability where chunked HTTP Hypertext Transfer Protocol trailers are incorrectly merged into request headers. This allows the attacker to place security-sensitive fields in trailers,...
libevent: Libevent: HTTP header handling bugs create risk of access control bypass.
A flaw was found in libevent. The evhttpdecodeuriinternal function in http.c decodes percent-encoded %00 bytes into literal NUL characters without rejecting them, allowing an attacker to craft a URI such as /admin/secret%00.jpg where extension-based access checks see .jpg but the server processes...
libevent: Libevent: Memory corruption due to use-after-free
A flaw was found in Libevent, an event notification library. A use-after-free vulnerability exists in the evbufferaddbufferreference function when it processes an output buffer with a zero length. This can lead to a dangling pointer, which an attacker could exploit to cause memory corruption or...
libevent: libevent: Multiple HTTP Parser Bugs Enable Request Smuggling
A flaw was found in libevent. The evhttp parser in libevent's http.c component inconsistently handles HTTP Transfer-Encoding headers and chunked framing. This inconsistency allows an unauthenticated remote attacker to desynchronize request boundaries when libevent is used behind a proxy. Successf...
libevent: Libevent: Denial of Service via malformed RPC data
A flaw was found in Libevent, an event notification library. A remote attacker could exploit an out-of-bounds read vulnerability in the decodetaginternal function by sending specially crafted, attacker-controlled tagged RPC Remote Procedure Call data. This could lead to a denial of service, causi...
libevent: Libevent: Denial of Service via integer conversion error in `evtag_unmarshal_header`
A flaw was found in Libevent. An incorrect integer conversion in the evtagunmarshalheader function allows a remote attacker to provide a specially crafted payload length. This can lead to a wrapped large allocation request, resulting in a denial of service DoS for the affected system...
libevent: Libevent: Off-by-one stack buffer overflow leading to denial of service or data corruption
A flaw was found in Libevent, an event notification library. An off-by-one stack buffer overflow exists in the dnsnametolabels function when processing a name-bearing DNS record. A remote attacker could send a specially crafted DNS server response, which may lead to a crash or corruption of the...
libevent: Libevent: Arbitrary code execution via heap out-of-bounds write in AF_UNIX handling
A flaw was found in Libevent. A heap out-of-bounds write vulnerability in the buffereventsocketsetconnaddress function allows an unauthenticated local peer to achieve arbitrary code execution. By connecting to an AFUNIX listener, an attacker can overwrite critical heap data, leading to memory...
Important: Red Hat Security Advisory: libevent security update
An update for libevent is now available for Red Hat Enterprise Linux 8. 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 for each vulnerability from...
libevent: libevent: Multiple HTTP Parser Bugs Enable Request Smuggling
A flaw was found in libevent. The evhttp parser in libevent's http.c component inconsistently handles HTTP Transfer-Encoding headers and chunked framing. This inconsistency allows an unauthenticated remote attacker to desynchronize request boundaries when libevent is used behind a proxy. Successf...
libevent: Libevent: Denial of Service via malformed RPC data
A flaw was found in Libevent, an event notification library. A remote attacker could exploit an out-of-bounds read vulnerability in the decodetaginternal function by sending specially crafted, attacker-controlled tagged RPC Remote Procedure Call data. This could lead to a denial of service, causi...
libevent: Libevent: Denial of Service via integer conversion error in `evtag_unmarshal_header`
A flaw was found in Libevent. An incorrect integer conversion in the evtagunmarshalheader function allows a remote attacker to provide a specially crafted payload length. This can lead to a wrapped large allocation request, resulting in a denial of service DoS for the affected system...