CVE-2024-9681: When curl is asked to use HSTS, the expiry time for a subdomain might overwrite a parent domain's cache entry, making it end sooner or later than otherwise intended. This affects curl using applications that enable HSTS and use URLs with the insecure `HTTP://` scheme and perform transfers with hosts like `x.example.com` as well as `example.com` where the first host is a subdomain of the second host. (The HSTS cache either needs to have been populated manually or there needs to have been previous HTTPS accesses done as the cache needs to have entries for the domains involved to trigger this problem.) When `x.example.com` responds with `Strict-Transport-Security:` headers, this bug can make the subdomain's expiry timeout *bleed over* and get set for the parent domain `example.com` in curl's HSTS cache. The result of a triggered bug is that HTTP accesses to `example.com` get converted to HTTPS for a different period of time than what was asked for by the origin server. If `example.com` for example stops supporting HTTPS at its expiry time, curl might then fail to access `http://example.com` until the (wrongly set) timeout expires. This bug can also expire the parent's entry *earlier*, thus making curl inadvertently switch back to insecure HTTP earlier than otherwise intended. The above is fixed in 8.11.0.
commit 8afcabd10b1d1154cedc50aebd50a514a0927d0f Author: Matt Jolly <kangie@gentoo.org> Date: Sun Nov 10 09:48:36 2024 +1000 net-misc/curl: add 8.11.0 There are a number of patches attached to this release. Normally I'd generate a downstream tarball, or wait for the next point release; however we have signed tarballs for curl and that's worth preserving, and the next point release has been pushed back until mid-December due to upstream availability. Signed-off-by: Matt Jolly <kangie@gentoo.org>
