CVE-2022-27780

NameCVE-2022-27780
DescriptionThe curl URL parser wrongly accepts percent-encoded URL separators like '/'when decoding the host name part of a URL, making it a *different* URL usingthe wrong host name when it is later retrieved.For example, a URL like `http://example.com%2F127.0.0.1/`, would be allowed bythe parser and get transposed into `http://example.com/127.0.0.1/`. This flawcan be used to circumvent filters, checks and more.
SourceCVE (at NVD; CERT, LWN, oss-sec, fulldisc, bugtraq, EDB, Metasploit, Red Hat, Ubuntu, Gentoo, SUSE bugzilla/CVE, Mageia, GitHub advisories/code/issues, web search, more)

Vulnerable and fixed packages

The table below lists information on source packages.

Source PackageReleaseVersionStatus
curl (PTS)buster7.64.0-4+deb10u2fixed
buster (security)7.64.0-4+deb10u3fixed
bullseye7.74.0-1.3+deb11u3fixed
bullseye (security)7.74.0-1.3+deb11u2fixed
bookworm, sid7.86.0-2fixed

The information below is based on the following data on fixed versions.

PackageTypeReleaseFixed VersionUrgencyOriginDebian Bugs
curlsourcestretch(not affected)
curlsourcebuster(not affected)
curlsourcebullseye(not affected)
curlsource(unstable)7.83.1-1

Notes

[bullseye] - curl <not-affected> (Vulnerable code introduced later)
[buster] - curl <not-affected> (Vulnerable code introduced later)
[stretch] - curl <not-affected> (Vulnerable code introduced later)
https://www.openwall.com/lists/oss-security/2022/05/11/3
https://curl.se/docs/CVE-2022-27780.html
Introduced by: https://github.com/curl/curl/commit/9a8564a920188e49d5bd8c1c8573ddef97f6e03a (curl-7_80_0)
Fixed by: https://github.com/curl/curl/commit/914aaab9153764ef8fa4178215b8ad89d3ac263a (curl-7_83_1)

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