libcurl4: The curl URL parser wrongly accepts percent-encoded URL separators like '/'when decoding the host name part of a URL,...
CVE-2022-27780 is fixed in 13 products on 1 platform, first by curl 7.81.0-1ubuntu1.2, released May 10, 2022. It is not reported as exploited. Patch Radar priority: High.
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.
Where it's fixed
| Product | Fixed in | Fix | Released |
|---|---|---|---|
| Linux | |||
| curl · Debian 12.15 (bookworm) | 7.83.1-1 | DEBIAN-CVE-2022-27780 | Jun 2, 2022 |
| curl · Debian 13.5 (trixie) | 7.83.1-1 | DEBIAN-CVE-2022-27780 | Jun 2, 2022 |
| curl · Debian 14 | 7.83.1-1 | DEBIAN-CVE-2022-27780 | Jun 2, 2022 |
| curl · Ubuntu 22.04.1 LTS (jammy) | 7.81.0-1ubuntu1.2 | curl 7.81.0-1ubuntu1.2 | May 10, 2022 |
| curl · amzn 2023 | 7.87.0-2.amzn2023.0.2 | ALAS2023-2023-083 | Feb 17, 2023 |
| curl-debuginfo · amzn 2023 | 7.87.0-2.amzn2023.0.2 | ALAS2023-2023-083 | Feb 17, 2023 |
| curl-debugsource · amzn 2023 | 7.87.0-2.amzn2023.0.2 | ALAS2023-2023-083 | Feb 17, 2023 |
| curl-minimal · amzn 2023 | 7.87.0-2.amzn2023.0.2 | ALAS2023-2023-083 | Feb 17, 2023 |
| curl-minimal-debuginfo · amzn 2023 | 7.87.0-2.amzn2023.0.2 | ALAS2023-2023-083 | Feb 17, 2023 |
| libcurl · amzn 2023 | 7.87.0-2.amzn2023.0.2 | ALAS2023-2023-083 | Feb 17, 2023 |
| libcurl-debuginfo · amzn 2023 | 7.87.0-2.amzn2023.0.2 | ALAS2023-2023-083 | Feb 17, 2023 |
| libcurl-devel · amzn 2023 | 7.87.0-2.amzn2023.0.2 | ALAS2023-2023-083 | Feb 17, 2023 |
| libcurl-minimal · amzn 2023 | 7.87.0-2.amzn2023.0.2 | ALAS2023-2023-083 | Feb 17, 2023 |
| libcurl-minimal-debuginfo · amzn 2023 | 7.87.0-2.amzn2023.0.2 | ALAS2023-2023-083 | Feb 17, 2023 |
| libcurl3-gnutls · Ubuntu 22.04.1 LTS (jammy) | 7.81.0-1ubuntu1.2 | libcurl3-gnutls 7.81.0-1ubuntu1.2 | May 10, 2022 |
| libcurl3-nss · Ubuntu 22.04.1 LTS (jammy) | 7.81.0-1ubuntu1.2 | libcurl3-nss 7.81.0-1ubuntu1.2 | May 10, 2022 |
| libcurl4 · Ubuntu 22.04.1 LTS (jammy) | 7.81.0-1ubuntu1.2 | libcurl4 7.81.0-1ubuntu1.2 | May 10, 2022 |
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