CVE-2016-4356 The append_utf8_value function in the DN decoder (dn.c) in Libksba before 1.3.3 allows remote attackers to cause a denial of service (out-of-bounds read) by clearing the high bit of the byte after inv...
HighCVSS 7.5
EPSS 3.3%
- Published
- Updated
- Exploit status
- No public exploit known
Description
The append_utf8_value function in the DN decoder (dn.c) in Libksba before 1.3.3 allows remote attackers to cause a denial of service (out-of-bounds read) by clearing the high bit of the byte after invalid utf-8 encoded data.
Affected products
| Product | Affected versions | Fixed in |
|---|---|---|
| debian/libksba(Debian:12) | < 1.3.3-1 | 1.3.3-1 |
| debian/libksba(Debian:13) | < 1.3.3-1 | 1.3.3-1 |
| debian/libksba(Debian:14) | < 1.3.3-1 | 1.3.3-1 |
| gnupg libksba | <= 1.3.2 | No fix listed |
| Canonical Ubuntu Linux | = 12.04 | No fix listed |
| Canonical Ubuntu Linux | = 14.04 | No fix listed |
References
- Debian Security Tracker CVE-2016-4356 vendor-advisory
- git.gnupg.org
- [oss-security] 20160429 CVE request: three issues in libksba mailing-list
- [oss-security] 20160429 Re: CVE request: three issues in libksba mailing-list
- [oss-security] 20160510 Re: Re: CVE request: three issues in libksba mailing-list
- USN-2982-1 vendor-advisory
- GLSA-201604-04 vendor-advisory