CVE-2012-6123 json
Chicken before 4.8.0 does not properly handle NUL bytes in certain strings, which allows an attacker to conduct "poisoned NUL byte attack."
published 2019-10-31 7 y ago modified 2026-06-16 4 mo ago also EUVD-2012-5990
- cvss
- 6.5
- version 3.1, NVD
- cisa kev
- Not listed
- not in CISA's catalog
- epss
- 1.3%
- EPSS 1.3% chance of exploitation in 30 days, percentile 70%
- public exploits
- 0
- none known
Summary
Chicken before 4.8.0 does not properly handle NUL bytes in certain strings, which allows an attacker to conduct "poisoned NUL byte attack."
Patch / fix
- call-cc chicken 4.8.0
- chicken Debian 14, Debian 13, Debian 12 4.8.0-1
debian advisories DEBIAN-CVE-2012-6123
Exploit prediction
1.28% chance of exploitation in the next 30 days, higher than 70% of all scored CVEs (FIRST EPSS, 2026-11-09).
CVSS scores
| assigned by | version | score | vector |
|---|---|---|---|
| NVD | 3.1 | 6.5 | CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:H/A:N |
| NVD | 2.0 | 5.0 | AV:N/AC:L/Au:N/C:N/I:P/A:N |
Affected products
- chicken chicken
Classification
- Weakness
-
- CWE-20 Improper Input Validation
References
-
security-tracker.debian.org
/tracker/CVE-2012-6123
third-party-advisory
-
access.redhat.com
/security/cve/cve-2012-6123
broken-link
-
openwall.com
/lists/oss-security/2013/02/08/2
mailing-list, third-party-advisory
Sources
- CVE List CVE-2012-6123
- NVD CVE-2012-6123
Fencer Intel keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.