CVE-2025-47905
Publication date 13 May 2025
Last updated 11 July 2025
Ubuntu priority
Description
Varnish Cache before 7.6.3 and 7.7 before 7.7.1, and Varnish Enterprise before 6.0.13r14, allow client-side desync via HTTP/1 requests, because the product incorrectly permits CRLF to be skipped to delimit chunk boundaries.
Status
| Package | Ubuntu Release | Status |
|---|---|---|
| varnish | 25.10 questing |
Not affected
|
| 25.04 plucky |
Needs evaluation
|
|
| 24.04 LTS noble |
Needs evaluation
|
|
| 22.04 LTS jammy |
Needs evaluation
|
|
| 20.04 LTS focal |
Needs evaluation
|
|
| 18.04 LTS bionic |
Needs evaluation
|
|
| 16.04 LTS xenial |
Needs evaluation
|
|
| 14.04 LTS trusty |
Needs evaluation
|
Severity score breakdown
| Parameter | Value |
|---|---|
| Base score |
5.4 · Medium
|
| Attack vector | Network |
| Attack complexity | High |
| Privileges required | None |
| User interaction | None |
| Scope | Changed |
| Confidentiality | Low |
| Integrity impact | Low |
| Availability impact | None |
| Vector | CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:C/C:L/I:L/A:N |
References
Other references
- https://www.cve.org/CVERecord?id=CVE-2025-47905
- https://varnish-cache.org/security/VSV00016.html
- https://github.com/varnishcache/varnish-cache/commit/b5f1faba6e8d9848cfe0cba566986e7e5cc5f65b (varnish-7.7.1)
- https://github.com/varnishcache/varnish-cache/commit/13904252859cf9848db5999b08c42d83a03ed812 (varnish-7.7.1)
- https://github.com/varnishcache/varnish-cache/commit/3d9a9abff1c6734feea9d48d5852ccad7e7d0a42 (varnish-7.7.1)
- https://github.com/varnishcache/varnish-cache/commit/00cb14931a53efafbdfec9843453fb1347bc9f59 (varnish-7.7.1)