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CVE-2022-32205

Status Candidate

Overview

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.

Related Files

Debian Security Advisory 5197-1
Posted Aug 28, 2022
Authored by Debian | Site debian.org

Debian Linux Security Advisory 5197-1 - Multiple security vulnerabilities have been discovered in cURL, an URL transfer library. These flaws may allow remote attackers to obtain sensitive information, leak authentication or cookie header data or facilitate a denial of service attack.

tags | advisory, remote, denial of service, vulnerability
systems | linux, debian
advisories | CVE-2021-22898, CVE-2021-22924, CVE-2021-22945, CVE-2021-22946, CVE-2021-22947, CVE-2022-22576, CVE-2022-27774, CVE-2022-27775, CVE-2022-27776, CVE-2022-27781, CVE-2022-27782, CVE-2022-32205, CVE-2022-32206, CVE-2022-32207
SHA-256 | 77ef9f5619851e18009af5092abdfe753f0a668e45b9771f079b64a5b7aa8eca
Ubuntu Security Notice USN-5495-1
Posted Jun 28, 2022
Authored by Ubuntu | Site security.ubuntu.com

Ubuntu Security Notice 5495-1 - Harry Sintonen discovered that curl incorrectly handled certain cookies. An attacker could possibly use this issue to cause a denial of service. This issue only affected Ubuntu 21.10, and Ubuntu 22.04 LTS. Harry Sintonen discovered that curl incorrectly handled certain HTTP compressions. An attacker could possibly use this issue to cause a denial of service. Harry Sintonen incorrectly handled certain file permissions. An attacker could possibly use this issue to expose sensitive information. This issue only affected Ubuntu 21.10, and Ubuntu 22.04 LTS.

tags | advisory, web, denial of service
systems | linux, ubuntu
advisories | CVE-2022-32205, CVE-2022-32206, CVE-2022-32207, CVE-2022-32208
SHA-256 | 1fe65184779786d3ab56c3974f55e77232c7046926fa263b44ad43d6389575e2
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