gssapi-abuse

gssapi-abuse gssapi-abuse는 제 DEF CON 31 발표의 일환으로 공개되었습니다. 해당 취약점 벡터에 대한 전체 글은 다음에서 확인할 수 있습니다: A Broken Marriage: Abusing Mixed Vendor Kerberos Stacks 이 도구는 두 가지 기능을 제공합니다. 첫 번째는 Active Directory에 가입되어 SSH를 통해 GSSAPI 인증을 제공하는 비 Windows 호스트를 열거하는 기능입니다. 두 번째 기능은 올바른 정방향 및/또는 역방향 조회 DNS 항목이 없는 GSSA...

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...

CVE-2026-31635-DirtyDecrypt

CVE-2026-31635 · DirtyDecrypt Linux 로컬 권한 상승 취약점 RxRPC/GSSAPI 복호화 경로 rxgkdecryptskb에서 skbcowdata 검사 누락으로 인해, 권한이 없는 로컬 공격자가 페이지 캐시 페이지를 손상시키고 읽기 전용 파일의 메모리 내 내용을 덮어쓸 수 있습니다. 목차 개요 빠른 시작 시스템 확인 익스플로잇 요약 영향받는 시스템 이 저장소 사용 방법 완화 조치 FAQ 저장소 구조 참고 자료 개요 이 저장소는 Linux 커널 net/rxrpc/rxgk.c에서 발생하는 로컬 권한 상승...

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 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 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 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...

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 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...

OESA-2026-3431 openssh security update

An open source implementation of SSH protocol version 2 Security Fixes: sshd in OpenSSH before 10.4 allows remote attackers to cause a denial of service resource consumption from excessive authentication attempts because MaxAuthTries was mishandled for GSSAPIAuthentication.CVE-2026-60000 sshd in...

OESA-2026-3429 openssh security update

An open source implementation of SSH protocol version 2 Security Fixes: sshd in OpenSSH before 10.4 allows remote attackers to cause a denial of service resource consumption from excessive authentication attempts because MaxAuthTries was mishandled for GSSAPIAuthentication.CVE-2026-60000 sshd in...