| Name | CVE-2022-27780 |
| Description | The 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. |
| Source | CVE (at NVD; CERT, LWN, oss-sec, fulldisc, Red Hat, Ubuntu, Gentoo, SUSE bugzilla/CVE, GitHub advisories/code/issues, web search, more) |
The table below lists information on source packages.
| Source Package | Release | Version | Status |
|---|---|---|---|
| curl (PTS) | jessie, jessie (lts) | 7.38.0-4+deb8u28 | fixed |
| stretch (security) | 7.52.1-5+deb9u16 | fixed | |
| stretch (lts), stretch | 7.52.1-5+deb9u22 | fixed | |
| buster, buster (lts) | 7.64.0-4+deb10u10 | fixed | |
| buster (security) | 7.64.0-4+deb10u9 | fixed | |
| bullseye | 7.74.0-1.3+deb11u13 | fixed | |
| bullseye (security) | 7.74.0-1.3+deb11u14 | fixed | |
| bookworm | 7.88.1-10+deb12u8 | fixed | |
| bookworm (security) | 7.88.1-10+deb12u5 | fixed | |
| sid, trixie | 8.11.0-1 | fixed |
The information below is based on the following data on fixed versions.
| Package | Type | Release | Fixed Version | Urgency | Origin | Debian Bugs |
|---|---|---|---|---|---|---|
| curl | source | jessie | (not affected) | |||
| curl | source | stretch | (not affected) | |||
| curl | source | buster | (not affected) | |||
| curl | source | bullseye | (not affected) | |||
| curl | source | (unstable) | 7.83.1-1 |
[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)
[jessie] - curl <not-affected> (Vulnerable code introduced later)