Vulnerability in Gnu Glibc
CVE-2019-19126
On the x86-64 architecture, the GNU C Library (aka glibc) before 2.31 fails to ignore the LD_PREFER_MAP_32BIT_EXEC environment variable during program execution after a security transition, allowing local attackers to restrict the possible mapping addresses for loaded libraries and thus bypass ASLR for a setuid program.
Vulnerability class: Dirty Pipe (CVE-2022-0847)
EPSS: 0.004 (33.6th percentile) — read the EPSS interpretation.
CVSS v3 metric
CVSS v3 base score 3.3 (Low). Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N.
Affected products
- Gnu Glibc
- Canonical Ubuntu_linux — versions 16.04, 18.04, 19.10
- Debian Debian_linux — versions 10.0
- Fedoraproject Fedora — versions 30, 31
- N/a — versions n/a
Weakness classification (CWE)
Public proof-of-concept exploits
References
- cve@mitre.org (Patch, Third Party Advisory, Issue Tracking)
- cve@mitre.org (vendor-advisory)
- cve@mitre.org (vendor-advisory)
- cve@mitre.org (vendor-advisory, Third Party Advisory)
- cve@mitre.org (mailing-list, Mailing List, Third Party Advisory)
Frequently asked questions
- What is CVE-2019-19126?
- CVE-2019-19126 is a low-severity vulnerability in Gnu Glibc, classified under Improper Initialization. CVSS score: 3.3/10. Published 2019-11-19.
- How severe is CVE-2019-19126?
- Low severity. CVSS v3 base score is 3.3 out of 10.
- Is CVE-2019-19126 known to be exploited?
- 2 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.