Description
Integer signedness error in the mms_ReceiveCommand function in modules/access/mms/mmstu.c in VLC Media Player 0.8.6i allows remote attackers to execute arbitrary code via a crafted mmst link with a negative size value, which bypasses a size check and triggers an integer overflow followed by a heap-based buffer overflow.
Fixed in Linux distributions
Distributions backport fixes, so the version that fixes this vulnerability differs per release — upgrade to at least the version shown. From the distributions' security trackers and advisories.
Debian
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Debian 14 | vlc | 0.8.6.h-4 | — |
| Debian 13 | vlc | 0.8.6.h-4 | — |
| Debian 12 | vlc | 0.8.6.h-4 | — |
| Debian 5.0 | vlc | 0.8.6.h-1+lenny1 | DTSA-166-1 |
| Debian 4.0 | vlc | 0.8.6-svn20061012.debian-5.1+etch3 | DSA-1819-1 |
Public exploits
Exploit or proof-of-concept code for this vulnerability is publicly available, which lowers the bar for attackers. Treat it as a reason to patch sooner.
Exploit-DB 1
- VideoLAN VLC Media Player 0.8.6i - Mms Protocol Handling Heap Overflow (PoC) EDB-6293 · dos · Aug 23, 2008 · verified
Sources: PoC-in-GitHub, Metasploit Framework, Exploit-DB — updated daily. Only links are listed; no exploit code is hosted here.
Advisories 2
- DSA-1819-1 vlc - several vulnerabilities Debian Security (DSA / DLA) · Mar 9, 2026
- DTSA-166-1 vlc - several integer overflows Debian Security (DSA / DLA) · Mar 9, 2026
References
- http://www.orange-bat.com/adv/2008/adv.08.24.txt
- 30806 vdb-entry
- oval:org.mitre.oval:def:14531 vdb-entry signature
- [vlc-devel] 20080824 commit: MMS integers handling fixes, including buffer overflow ( Rémi Denis-Courmont ) mailing-list
- 6293 exploit
- vlcmediaplayer-memmove-bo(44659) vdb-entry
- 1020759 vdb-entry
- 4190 third-party-advisory
- [oss-security] 20080824 Re: CVE id request: vlc mailing-list
- GLSA-200809-06 vendor-advisory