Buffer overflow in Libidn - CVE-2015-2059
Published: August 12, 2015 / Updated: July 28, 2020
Vulnerability identifier: #VU32284
CSH Severity: Medium
CVSS v4: 6.9 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:L/VA:L/SC:N/SI:N/SA:N]
CVE-ID: CVE-2015-2059
CWE-ID: CWE-119
Exploitation vector: Remote access
Exploit availability:
No public exploit available
Vulnerability details
The vulnerability allows a remote non-authenticated attacker to read and manipulate data.
The stringprep_utf8_to_ucs4 function in libin before 1.31, as used in jabberd2, allows context-dependent attackers to read system memory and possibly have other unspecified impact via invalid UTF-8 characters in a string, which triggers an out-of-bounds read.
Affected software
Libidn
libidn (Alpine package)
libidn
IBM Tivoli Storage Manager
Fedora
libidn (Alpine package)
libidn
IBM Tivoli Storage Manager
Fedora
How to mitigate CVE-2015-2059
Install update from vendor's website.
Libidn - update to 1.31
libidn (Alpine package) - update to 1.31-r0
libidn - addressed in versions 1.31-1.fc21, 1.31-1.fc22
libidn (Alpine package) - update to 1.31-r0
libidn - addressed in versions 1.31-1.fc21, 1.31-1.fc22
External References
- http://git.savannah.gnu.org/cgit/libidn.git/commit/?id=2e97c279
- http://lists.fedoraproject.org/pipermail/package-announce/2015-July/162537.html
- http://lists.fedoraproject.org/pipermail/package-announce/2015-July/162549.html
- http://lists.opensuse.org/opensuse-updates/2015-07/msg00042.html
- http://lists.opensuse.org/opensuse-updates/2016-08/msg00098.html
- http://www.debian.org/security/2016/dsa-3578
- http://www.openwall.com/lists/oss-security/2015/02/23/25
- http://www.securityfocus.com/bid/72736
- http://www.ubuntu.com/usn/USN-3068-1
- https://github.com/jabberd2/jabberd2/issues/85