CVE-2023-4911
CVSS v3
7.8
HIGH
EPSS Score
64.7 %
exploit probability
CISA KEV
Yes
known exploited
Exploitation
—
SSVC status
Description
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.
CISA Known Exploited Vulnerability
- Date Added
- 2023-11-21
- Patch Due Date
- 2023-12-12
- Ransomware Use
- Unknown
Technical details
- Published
- 2023-10-03
- Exploit-DB
- EDB-52479
Frequently asked questions
What is CVE-2023-4911?
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.
Is CVE-2023-4911 actively exploited?
Yes. CVE-2023-4911 is on the CISA Known Exploited Vulnerabilities (KEV) catalog, meaning it has been confirmed as actively exploited in the wild. CISA requires federal agencies to patch by 2023-12-12.
What is the CVSS score for CVE-2023-4911?
CVE-2023-4911 has a CVSS v3 base score of 7.8 (HIGH severity).
Is CVE-2023-4911 affecting your environment?
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