CVE-2023-4911
GNU C Library Buffer Overflow Vulnerability
- 대응 우선순위
- 최우선
- CVSS
- 7.8
- EPSS
- 78.6% 백분위 99.5% · 2026.06.27 기준
- CISA KEV
- 등록
- 조치 기한
- 2023.12.12
- 공개일
- 2023.10.04
CISA KEV에 등록된 실제 악용 확인 취약점
A buffer overflow was discovered in the GNU C Library's dynamic loader ld.so while processing the GLIBC_TUNABLES environment variable. This issue could allow a local attacker to use maliciously crafted GLIBC_TUNABLES environment variables when launching binaries with SUID permission to execute code with elevated privileges.
공급사 GNU
제품 GNU C Library
영향 버전 2.34, V3.1.5, >= 3.1.5, < 1.1, >= 2.34 < 2.39, 37, 38, 39, 9.0, 8.6, 9.2, 9.4, 9.6, 9.0 aarch64, 9.2 aarch64, 9.4 aarch64, 9.6 aarch64, 9.0 s390x, 9.2 s390x, 9.4 s390x
수정 버전 1.1, 2.39
Apply mitigations per vendor instructions or discontinue use of the product if mitigations are unavailable.
조치 기한: 2023.12.12CVSS 벡터 CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
CWE CWE-122, CWE-787
KEV 등록일 2023.11.21
랜섬웨어 캠페인 사용 미확인
CISA 비고 This vulnerability affects a common open-source component, third-party library, or a protocol used by different products. Please check with specific vendors for information on patching status. For more information, please see: https://sourceware.org/git/?p=glibc.git;a=commitdiff;h=1056e5b4c3f2d90ed2b4a55f96add28da2f4c8fa, https://access.redhat.com/security/cve/cve-2023-4911, https://www.debian.org/security/2023/dsa-5514 ; https://nvd.nist.gov/vuln/detail/CVE-2023-4911
EPSS 데이터 기준일 2026.06.27