A malicious server can serve excessive amounts of Set-Cookie: headers in a HTTP response to curl and curl < 7.84.0 stores all of them. A sufficiently large amount of (big) cookies make subsequent HTTP requests to this, or other servers to which the cookies match, create requests that become larger than the threshold that curl uses internally to avoid sending crazy large requests (1048576 bytes) and instead returns an error.This denial state might remain for as long as the same cookies are kept, match and haven't expired. Due to cookie matching rules, a server on foo.example.com can set cookies that also would match for bar.example.com, making it it possible for a "sister server" to effectively cause a denial of service for a sibling site on the same second level domain using this method.
This page covers CVE-2022-32205 as tracked by Ubuntu, for the package curl. The fix is available in version 7.81.0-1ubuntu1.3; earlier versions remain affected.
This issue can be reached over the network, attack complexity is low, an attacker needs no privileges on the target. A user must be tricked into taking some action. The scope is unchanged, so the impact stays within the vulnerable component. Rated impact: confidentiality none, integrity none, availability low.
The score comes from this vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:L
UBUNTU-CVE-2022-32205 is classified as CWE-770: Allocation of Resources Without Limits. Resources are allocated on request with no cap, so a client can exhaust them.
UBUNTU-CVE-2022-32205 is recorded against 1 package.
Published on 27 June 2022 and last revised on 22 April 2026. No public exploit is currently recorded for this entry. Record sourced from OSV.
ubuntu.com (Report)
curl.se (Report)
ubuntu.com (Advisory)
www.cve.org (Report)
curl has other advisories on record. If you are patching this one, these are worth checking on the same host:
These advisories are the same class of weakness (CWE-770: Allocation of Resources Without Limits) in other software:
Each distribution ships its own build and its own fixed version. Pick the one you run:
Details
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:L
Affected Packages
| Software | From version | Fixed in |
|---|---|---|
| curl | — | 7.81.0-1ubuntu1.3 |
References
Similar Threats
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UBUNTU-CVE-2022-32205 is rated CVSS 4.3 Medium. BotEraser monitors your WordPress installation and notifies you when software you use appears in our vulnerability database.
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