CVE-2012-6656: canonical ubuntu_linux Improper Input Validation
Vulnerability summary
CVE-2012-6656 is a medium (CVSS 5.0) Improper Input Validation vulnerability in canonical ubuntu_linux. EPSS estimates a 3.44% chance of exploitation in the next 30 days, higher than 88.9% of scored vulnerabilities. 1 public exploit is recorded.
Not severe (CVSS 5, network access); no exploitation reported by the 5 checked sources
Source freshness unavailable
How is this decided?Advisory lineage
Upstream 0 · Downstream 3 · Related 1Timeline
- 05-12-2014PublishedVulnerability first disclosed.
- 06-08-2024Last modifiedVulnerability information updated.
Description
iconvdata/ibm930.c in GNU C Library (aka glibc) before 2.16 allows context-dependent attackers to cause a denial of service (out-of-bounds read) via a multibyte character value of "0xffff" to the iconv function when converting IBM930 encoded data to UTF-8.
CVSS metrics
1 score · 1 source · 1 versionEPSS trend
Probability
3.44%
Chance of exploitation in the next 30 days
Percentile
89%
Versus all other CVEs
30-day change
No change 0.00 pp
From 3.44% on 04-10-2026
Known exploited
Compare KEV catalogs
CISA KEVNot in the CISA KEV catalog.
ENISA CNWNot in the ENISA CNW catalog.
CIRCLNot in the CIRCL catalog.
Public exploits
1 foundExploit Reference (sourceware.org)
Maturity: unknown
Weaknesses
CWE · root causeAffected systems
Known conditions: network-reachable, no authentication (CVSS vector). Other conditions: not stated in public data.
Debian2 products
- glibc< 2.17-1
- debian_linuxEOL7.0
Canonical1 product
- ubuntu_linuxEOL10.04 | 12.04 | 14.04 | 14.10
Gnu1 product
- glibc≤ 2.16
Ubuntu1 product
- eglibc< 2.19-0ubuntu6.3
4 vendors · 5 products
References
13 links- www.mandriva.com/security/advisories?name=MDVSA-2014:175Vendor AdvisoryX Refsource MANDRIVABroken Link
- www.openwall.com/lists/oss-security/2014/08/29/3Mailing ListX Refsource MLISTThird Party AdvisoryREPORT
