Infinite loop in Debian Linux - CVE-2017-6299
Published: February 24, 2017 / Updated: August 8, 2020
Vulnerability identifier: #VU39627
CSH Severity: Medium
CVSS v4: 6.9 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:A/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N]
CVE-ID: CVE-2017-6299
CWE-ID: CWE-835
Exploitation vector: Remote access
Exploit availability:
No public exploit available
Vulnerability details
The vulnerability allows a remote non-authenticated attacker to perform a denial of service (DoS) attack.
An issue was discovered in ytnef before 1.9.1. This is related to a patch described as "2 of 9. Infinite Loop / DoS in the TNEFFillMapi function in lib/ytnef.c." <a href="http://cwe.mitre.org/data/definitions/835.html" rel="nofollow">CWE-835: Loop with Unreachable Exit Condition ('Infinite Loop')</a>
Affected software
Debian Linux
Ubuntu
libytnef0 (Ubuntu package)
Ubuntu
libytnef0 (Ubuntu package)
How to mitigate CVE-2017-6299
Install update from vendor's website.
libytnef0 (Ubuntu package) - update to 1.5-9ubuntu0.1
External References
- http://www.debian.org/security/2017/dsa-3846
- http://www.openwall.com/lists/oss-security/2017/02/15/4
- http://www.securityfocus.com/bid/96423
- https://github.com/Yeraze/ytnef/pull/27
- https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/LFJWMUEUC4ILH2HEOCYVVLQT654ZMCGQ/
- https://www.x41-dsec.de/lab/advisories/x41-2017-002-ytnef/