SB2016090710 - Out-of-bounds read in GNU Libidn
Published: September 7, 2016 Updated: July 28, 2020
Security Bulletin ID
SB2016090710
Severity
Medium
Patch available
YES
Number of vulnerabilities
1
Exploitation vector
Remote access
Highest impact
Denial of service
Breakdown by Severity
- Low
- Medium
- High
- Critical
Description
This security bulletin contains information about 1 security vulnerability.
1) Out-of-bounds read (CVE-ID: CVE-2016-6263)
The vulnerability allows a remote non-authenticated attacker to perform a denial of service (DoS) attack.
The stringprep_utf8_nfkc_normalize function in lib/nfkc.c in libidn before 1.33 allows context-dependent attackers to cause a denial of service (out-of-bounds read and crash) via crafted UTF-8 data.
Remediation
Install update from vendor's website.
References
- http://git.savannah.gnu.org/cgit/libidn.git/commit/?id=1fbee57ef3c72db2206dd87e4162108b2f425555
- http://lists.opensuse.org/opensuse-updates/2016-08/msg00005.html
- http://lists.opensuse.org/opensuse-updates/2016-08/msg00098.html
- http://www.debian.org/security/2016/dsa-3658
- http://www.openwall.com/lists/oss-security/2016/07/20/6
- http://www.openwall.com/lists/oss-security/2016/07/21/4
- http://www.securityfocus.com/bid/92070
- http://www.ubuntu.com/usn/USN-3068-1
- https://lists.gnu.org/archive/html/help-libidn/2016-07/msg00009.html
- https://security.gentoo.org/glsa/201908-06