Description
plugin/npapi/plugin.cpp in Gnash before 0.8.10 uses weak permissions (world readable) for cookie files with predictable names in /tmp, which allows local users to obtain sensitive information.
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 6.0 | gnash | 0.8.8-5+squeeze1 | DSA-2435-1 |
Advisories 1
- DSA-2435-1 gnash - several Debian Security (DSA / DLA) · Mar 9, 2026
References
- [oss-security] 20111121 Re: CVE Request (minor) -- gnash -- Unsafe management of HTTP cookies mailing-list
- openSUSE-SU-2012:0330 vendor-advisory
- http://git.savannah.gnu.org/gitweb/?p=gnash.git%3Ba=commitdiff%3Bh=fa481c116e65ccf9137c7ddc8abc3cf05dc12f55
- [oss-security] 20111121 CVE Request (minor) -- gnash -- Unsafe management of HTTP cookies mailing-list
- 48325 third-party-advisory
- 50747 vdb-entry
- http://bugs.debian.org/cgi-bin/bugreport.cgi?bug=649384
- openSUSE-SU-2012:0369 vendor-advisory
- DSA-2435 vendor-advisory
- 77243 vdb-entry
- https://bugzilla.redhat.com/show_bug.cgi?id=755518
- 48466 third-party-advisory