Vulnerability Description
Off-by-one error in the append_utf8_value function in the DN decoder (dn.c) in Libksba before 1.3.4 allows remote attackers to cause a denial of service (out-of-bounds read) via invalid utf-8 encoded data. NOTE: this vulnerability exists because of an incomplete fix for CVE-2016-4356.
CVSS Score
HIGH
Affected Products
| Vendor | Product | Versions |
|---|---|---|
| Gnupg | Libksba | <= 1.3.3 |
| Canonical | Ubuntu Linux | 12.04 |
| Opensuse | Leap | 42.1 |
| Opensuse | Opensuse | 13.2 |
Related Weaknesses (CWE)
References
- http://git.gnupg.org/cgi-bin/gitweb.cgi?p=libksba.git%3Ba=commit%3Bh=6be61daac04
- http://lists.opensuse.org/opensuse-updates/2016-05/msg00087.html
- http://lists.opensuse.org/opensuse-updates/2016-06/msg00028.html
- http://www.openwall.com/lists/oss-security/2016/05/10/3
- http://www.openwall.com/lists/oss-security/2016/05/10/4
- http://www.ubuntu.com/usn/USN-2982-1
- http://git.gnupg.org/cgi-bin/gitweb.cgi?p=libksba.git%3Ba=commit%3Bh=6be61daac04
- http://lists.opensuse.org/opensuse-updates/2016-05/msg00087.html
- http://lists.opensuse.org/opensuse-updates/2016-06/msg00028.html
- http://www.openwall.com/lists/oss-security/2016/05/10/3
- http://www.openwall.com/lists/oss-security/2016/05/10/4
- http://www.ubuntu.com/usn/USN-2982-1
FAQ
What is CVE-2016-4574?
CVE-2016-4574 is a vulnerability with a CVSS score of 7.5 (HIGH). Off-by-one error in the append_utf8_value function in the DN decoder (dn.c) in Libksba before 1.3.4 allows remote attackers to cause a denial of service (out-of-bounds read) via invalid utf-8 encoded ...
How severe is CVE-2016-4574?
CVE-2016-4574 has been rated HIGH with a CVSS base score of 7.5/10. Review the CVSS metrics above for detailed severity breakdown.
Is there a patch for CVE-2016-4574?
Check the references section above for vendor advisories and patch information. Affected products include: Gnupg Libksba, Canonical Ubuntu Linux, Opensuse Leap, Opensuse Opensuse.