Out-of-bounds Read in Gnu Gawk
CVE-2023-4156
A heap out-of-bounds read flaw was found in builtin.c in the gawk package. This issue may lead to a crash and could be used to read sensitive information.
Vulnerability class: Buffer Overflow
EPSS: 0.004 (34.5th percentile) — read the EPSS interpretation.
CVSS v3 metric
CVSS v3 base score 4.4 (Medium). Vector: CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:L/I:N/A:L.
Affected products
- Gnu Gawk
- Fedora
- Fedoraproject Fedora — versions 38
- Red Hat Enterprise Linux 6
- Red Hat Enterprise Linux 7
- Red Hat Enterprise Linux 8
- Red Hat Enterprise Linux 9
- Redhat Enterprise_linux — versions 6.0, 7.0
- N/a Gawk — versions 5.1.1
Weakness classification (CWE)
Public proof-of-concept exploits
References
- secalert@redhat.com (x_refsource_REDHAT, Exploit, Third Party Advisory, Release Notes, vdb-entry, Issue Tracking)
- secalert@redhat.com (x_refsource_REDHAT, issue-tracking, Exploit, Third Party Advisory, Release Notes, Issue Tracking)
Frequently asked questions
- What is CVE-2023-4156?
- CVE-2023-4156 is a medium-severity vulnerability in Gnu Gawk, classified under Out-of-bounds Read. CVSS score: 4.4/10. Published 2023-09-25.
- How severe is CVE-2023-4156?
- Medium severity. CVSS v3 base score is 4.4 out of 10.
- Is CVE-2023-4156 known to be exploited?
- 2 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.