Description
server/parser/sprite_definition.cpp in GNU Gnash (aka GNU Flash Player) 0.7.2 allows remote attackers to execute arbitrary code via a large number of SHOWFRAME elements within a DEFINESPRITE element, which triggers memory corruption and enables the attacker to call free with an arbitrary address, probably resultant from a 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 5.0 | gnash | 0.7.2-1lenny1 | DTSA-48-1 |
Advisories 1
- DTSA-48-1 gnash - arbitrary code execution Debian Security (DSA / DLA) · Mar 9, 2026
References
- 37273 vdb-entry
- 23765 vdb-entry
- http://savannah.gnu.org/bugs/?19774
- 1018041 vdb-entry
- SUSE-SR:2007:013 vendor-advisory
- gnuflash-sprite-code-execution(34148) vdb-entry
- ADV-2007-1688 vdb-entry
- 25787 third-party-advisory