| Name | CVE-2020-15094 |
| Description | In Symfony before versions 4.4.13 and 5.1.5, the CachingHttpClient class from the HttpClient Symfony component relies on the HttpCache class to handle requests. HttpCache uses internal headers like X-Body-Eval and X-Body-File to control the restoration of cached responses. The class was initially written with surrogate caching and ESI support in mind (all HTTP calls come from a trusted backend in that scenario). But when used by CachingHttpClient and if an attacker can control the response for a request being made by the CachingHttpClient, remote code execution is possible. This has been fixed in versions 4.4.13 and 5.1.5. |
| Source | CVE (at NVD; CERT, LWN, oss-sec, fulldisc, Red Hat, Ubuntu, Gentoo, SUSE bugzilla/CVE, GitHub advisories/code/issues, web search, more) |
Vulnerable and fixed packages
The table below lists information on source packages.
| Source Package | Release | Version | Status |
|---|
| symfony (PTS) | buster | 3.4.22+dfsg-2+deb10u1 | fixed |
| buster (security) | 3.4.22+dfsg-2+deb10u3 | fixed |
| bullseye | 4.4.19+dfsg-2+deb11u4 | fixed |
| bookworm | 5.4.23+dfsg-1+deb12u1 | fixed |
| sid, trixie | 6.4.6+dfsg-1 | fixed |
The information below is based on the following data on fixed versions.
| Package | Type | Release | Fixed Version | Urgency | Origin | Debian Bugs |
|---|
| symfony | source | stretch | (not affected) | | | |
| symfony | source | buster | (not affected) | | | |
| symfony | source | (unstable) | 4.4.13+dfsg-1 | | | |
Notes
[buster] - symfony <not-affected> (Vulnerable code introduced later - in v4.4.0)
[stretch] - symfony <not-affected> (Vulnerable code introduced later - in v4.4.0)
https://github.com/symfony/symfony/security/advisories/GHSA-754h-5r27-7x3r
https://github.com/symfony/symfony/commit/d9910e0b33a2e0f993abff41c6fbc86951b66d78