In stroke_socket.c in strongSwan before 5.6.3, a missing packet length check could allow a buffer underflow, which may lead to resource exhaustion and denial of service while reading from the socket.
The product writes to a buffer using an index or pointer that references a memory location prior to the beginning of the buffer.
The product writes data past the end, or before the beginning, of the intended buffer.
| Link | Tags |
|---|---|
| http://www.kb.cert.org/vuls/id/338343 | third party advisory us government resource |
| https://security.gentoo.org/glsa/201811-16 | third party advisory vendor advisory |
| https://git.strongswan.org/?p=strongswan.git%3Ba=commitdiff%3Bh=0acd1ab4 | |
| http://www.securityfocus.com/bid/104263 | vdb entry third party advisory |
| https://usn.ubuntu.com/3771-1/ | third party advisory vendor advisory |
| https://www.debian.org/security/2018/dsa-4229 | third party advisory vendor advisory |
| http://lists.opensuse.org/opensuse-security-announce/2019-11/msg00077.html | vendor advisory |
| http://lists.opensuse.org/opensuse-security-announce/2019-12/msg00001.html | vendor advisory |
| http://lists.opensuse.org/opensuse-security-announce/2020-03/msg00047.html | vendor advisory |
| http://packetstormsecurity.com/files/172833/strongSwan-VPN-Charon-Server-Buffer-Overflow.html |