30 matches found
looney-tunables-CVE-2023-4911
CVE-2023-4911 Looney Tunables PoC 이것은 glibc 동적 로더의 GLIBCTUNABLES 환경 변수 파싱 함수 parsetunables 의 버그를 이용하는 CVE-2023-4911"Looney Tunables"의 PoC입니다. 시작하기 프로그램 실행 대상이 취약한지 확인할 수 있습니다 env -i "GLIBCTUNABLES=glibc.malloc.mxfast=glibc.malloc.mxfast=A" "Z=printf '%08192x' 1" /usr/bin/su --help Segmentation...
looneyCVE
1단계 glibc 버전 확인 ldd --version 시스템이 Looney Tunables CVE-2023-4911에 취약한지 확인 env -i "GLIBCTUNABLES=glibc.malloc.mxfast=glibc.malloc.mxfast=A" "Z=printf '%08192x' 1" /usr/bin/su --help Segmentation fault core dumped가 발생하면 시스템이 취약한 것입니다. 2단계 python3 libc.py 3단계 gcc -o exp exp.c ./exp...
CVE-2023-4911
CVE-2023-4911「Looney Tunables」のPoC これは、glibc ダイナミックローダーの GLIBCTUNABLES 環境変数のパース関数 parsetunables のバグを悪用する、CVE-2023-4911（別名「Looney Tunables」）の PoC です。 コードは、glibc バージョン 2.35-0ubuntu3.3 を搭載した Ubuntu 22.04.3 でテスト済みです。この PoC を一般化する試みは行われていません（要するに「自分の環境では動く」というだけです）。したがって、環境によって動作は異なる可能性があります。...
CVE-2023-4911
CVE-2023-4911 이것은 CVE-2023-4911"Looney Tunables"에 대한 PoC로, glibc 동적 로더의 GLIBCTUNABLES 환경 변수 파싱 함수 parsetunables의 버그를 이용합니다. 이것은 C PoC를 순수 파이썬 방식으로 다시 작성한 것입니다. 다른 플랫폼에서 익스플로잇을 쉽게 커스터마이즈할 수 있도록 하기 위해 이렇게 했습니다. 유일한 요구 사항은 pwntools이며, 다음과 같이 설치할 수 있습니다: python3 -m pip install --upgrade pwntools 원본 C...
CVE-2023-4911
CVE-2023-4911 이는 Looney Tunables Linux 권한 상승 취약점에 대한 PoCProof Of Concept입니다. 이 PoC는 이 PoC를 기반으로 합니다. leesh3288님께 큰 감사를 드립니다. 여기에서 매우 상세한 설명을 찾을 수 있으며, 여기에서 IppSec의 멋진 동영상을 볼 수 있습니다. 사용법 취약한지 확인하세요 env -i "GLIBCTUNABLES=glibc.malloc.mxfast=glibc.malloc.mxfast=A" "Z=printf '%08192x' 1" /usr/bin/su...
CVE-2023-4911-PoC
GNU C 라이브러리 동적 로더 취약점 CVE-2023-4911 개요 GNU C 라이브러리glibc는 GNU 시스템의 C 라이브러리로, 리눅스 기반 시스템의 핵심 구성 요소입니다. glibc는 프로그램에 필수적인 기능시스템 호출, open, malloc, printf, exit 등 일반 함수을 정의합니다. 동적 로더는 glibc의 중요한 구성 요소로서, 공유 라이브러리를 관리하고 런타임에 연결하여 프로그램을 준비하고 실행하는 핵심 역할을 합니다. GLIBCTUNABLES 환경 변수 GLIBCTUNABLES 환경 변수는 재컴파일...
CVE-2023-4911-Lab
CVE-2023-4911 "Looney Tunables" 분석 환경 GNU C Libraryglibc 동적 로더의 버퍼 오버플로우 취약점Local Privilege Escalation 분석 및 익스플로잇 개발을 위한 Docker 기반 실습 환경입니다. CVE 정보 항목| 내용 ---|--- CVE 번호| CVE-2023-4911 별칭| Looney Tunables 취약 대상| GNU C Library glibc 2.34 2.38 취약 버전| Ubuntu 22.04 — libc6 2.35-0ubuntu3.3 이하 패치 버전|...
CVE-2023-4911
glibc 힙 버퍼 오버플로우 취약점CVE-2023-4911 항목| 내용 ---|--- CVE ID| CVE-2023-4911 공격 유형| 힙 버퍼 오버플로우 → 로컬 권한상승Local Privilege Escalation CVSS 3.1| 7.8 High 공개일| 2023-10-03 취약 포인트| glibc 동적 로더ld.so의 GLIBCTUNABLES 파서 취약 버전| glibc 2.342.38 1. 개요 CVE-2023-4911은 GNU C Libraryglibc의 동적 로더가 GLIBCTUNABLES 환경변수를 파싱하는...
CentOS 8 : glibc (CESA-2023:5455)
The remote CentOS Linux 8 host has packages installed that are affected by multiple vulnerabilities as referenced in the CESA-2023:5455 advisory. - A flaw was found in glibc. When the getaddrinfo function is called with the AFUNSPEC address family and the system is configured with no-aaaa mode vi...
Exploit for Heap-based Buffer Overflow in Gnu Glibc
GNU C Library's Dynamic Loader Vulnerability CVE-2023-4911...
A buffer overflow was discovered in the GNU C Library's dynamic loader ld.so
A buffer overflow was discovered in the GNU C Library's dynamic loader ld.so while processing the GLIBCTUNABLES environment variable. This issue could allow a local attacker to use maliciously crafted GLIBCTUNABLES environment variables when launching binaries with SUID permission to execute code...
Glibc Tunables Privilege Escalation Exploit
A buffer overflow exists in the GNU C Library's dynamic loader ld.so while processing the GLIBCTUNABLES environment variable. It has been dubbed Looney Tunables. This issue allows an local attacker to use maliciously crafted GLIBCTUNABLES when launching binaries with SUID permission to execute co...
Glibc Tunables Privilege Escalation
This module requires Metasploit: https://metasploit.com/download Current source: https://github.com/rapid7/metasploit-framework class MetasploitModule 561, '3602eac894717d56555552c84fc6b0e4d6a4af72' = 561, 'a99db3715218b641780b04323e4ae5953d68a927' = 561, 'a8daca28288575ffc8c7641d40901b0148958fb1...
Exploit for Heap-based Buffer Overflow in Gnu Glibc
CVE-2023-4911-Looney-Tunables Looney Tunables Local privilege...
Oracle Linux 8 : glibc (ELSA-2023-5455)
The remote Oracle Linux 8 host has packages installed that are affected by multiple vulnerabilities as referenced in the ELSA-2023-5455 advisory. - CVE-2023-4527: Stack read overflow in getaddrinfo in no-aaa mode. - CVE-2023-4813: potential use-after-free in gaihinet RHEL-2435. Tenable has...
glibc ld.so Local Privilege Escalation Vulnerability
Dubbed Looney Tunables, Qualys discovered a buffer overflow vulnerability in the glibc dynamic loader's processing of the GLIBCTUNABLES environment variable. This vulnerability was introduced in April 2021 glibc 2.34 by commit 2ed18c. Looney Tunables: Local Privilege Escalation in the glibc's ld....
glibc ld.so Local Privilege Escalation
Qualys Security Advisory Looney Tunables: Local Privilege Escalation in the glibc's ld.so CVE-2023-4911 ======================================================================== Contents ======================================================================== Summary Analysis Proof of concept...
Oracle Linux 9 : glibc (ELSA-2023-12854)
The remote Oracle Linux 9 host has packages installed that are affected by a vulnerability as referenced in the ELSA-2023-12854 advisory. 2.34-60.0.3 - CVE-2023-4911: tunables: Terminate immediately if end of input is reached Reviewed by: Jose E. Marchesi Tenable has extracted the preceding...
Exploit for Heap-based Buffer Overflow in Gnu Glibc
PoC of CVE-2023-4911 "Looney Tunables" This is a PoC of CVE-2...
AZL-34733 CVE-2023-4911 affecting package glibc for versions less than 2.38-6
A buffer overflow was discovered in the GNU C Library's dynamic loader ld.so while processing the GLIBCTUNABLES environment variable. This issue could allow a local attacker to use maliciously crafted GLIBCTUNABLES environment variables when launching binaries with SUID permission to execute code...