Vulnerability · Published Sep 25, 2023 · Assigned by redhat
CVE-2023-4156Heap out of bound read in builtin.c
Medium 4.4
In plain English
A medium-severity out-of-bounds read in Fedora from Fedora. Proof-of-concept exploit code is public. The chance it is exploited in the next 30 days is estimated at 0.4% (higher than 36% of all known vulnerabilities). Fixed versions are available - upgrade the affected package.
Severity (CVSS 3.1)4.4Medium
Exploit odds (30 days)0.4%top 64.0% of all CVEs
Exploited in the wildNo reportsCISA SSVC: poc
Attack toolingNoneno public tooling known
Official description
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.
Affected packages & fixed versions
| Ecosystem | Package | Fixed in | Advisory |
|---|---|---|---|
| Debian:12 | gawk | 1:5.2.1-1 | DEBIAN-CVE-2023-4156 |
| Debian:13 | gawk | 1:5.2.1-1 | DEBIAN-CVE-2023-4156 |
| Debian:14 | gawk | 1:5.2.1-1 | DEBIAN-CVE-2023-4156 |
| Ubuntu:22.04:LTS | gawk | 1:5.1.0-1ubuntu0.1 | USN-6373-1 |
| Ubuntu:22.04:LTS | gawk | 1:5.1.0-1ubuntu0.1 | UBUNTU-CVE-2023-4156 |
Affected products (as reported)
| Vendor | Product | Versions |
|---|---|---|
| n/a | gawk | see references |
| Red Hat | Red Hat Enterprise Linux 6 | see references |
| Red Hat | Red Hat Enterprise Linux 7 | see references |
| Red Hat | Red Hat Enterprise Linux 8 | see references |
| Red Hat | Red Hat Enterprise Linux 9 | see references |
| Fedora | Fedora | see references |
Weakness: CWE-125 · Vector: CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:L/I:N/A:L
References
- https://access.redhat.com/security/cve/CVE-2023-4156 vdb-entry, x_refsource_REDHAT
- RHBZ#2215930 issue-tracking, x_refsource_REDHAT