GNU glibc buffer overflow | CVE-2021-3999
NAME
GNU glibc buffer overflow
- Platforms Affected:
GNU glibc - Risk Level:
8.4 - Exploitability:
Unproven - Consequences:
Gain Access
DESCRIPTION
GNU glibc is vulnerable to an off-by-one buffer overflow and underflow, caused by improper bounds checking by the getcwd() function. By sending a specially-crafted request, a local authenticated attacker could overflow a buffer and execute arbitrary code on the system.
CVSS 3.0 Information
- Privileges Required: None
- User Interaction: None
- Scope: Unchanged
- Access Vector: Local
- Access Complexity: Low
- Confidentiality Impact: High
- Integrity Impact: High
- Availability Impact: High
- Remediation Level: Official Fix
MITIGATION
Refer to glibc GIT Repository for patch, upgrade or suggested workaround information. See References.
- Reference Link:
https://seclists.org/oss-sec/2022/q1/68 - Reference Link:
https://sourceware.org/git/gitweb.cgi?p=glibc.git;h=23e0e8f5f1fb5ed150253d986ecccdc90c2dcd5e
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