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Bug 926786 (CVE-2024-28757) - <dev-libs/expat-2.6.2: vulnerable to billion laughs attacks with isolated use of external parsers
Summary: <dev-libs/expat-2.6.2: vulnerable to billion laughs attacks with isolated use...
Status: IN_PROGRESS
Alias: CVE-2024-28757
Product: Gentoo Security
Classification: Unclassified
Component: Vulnerabilities (show other bugs)
Hardware: All Linux
: Normal normal (vote)
Assignee: Gentoo Security
URL: https://github.com/libexpat/libexpat/...
Whiteboard: A3 [stable?]
Keywords:
Depends on: 924601 930032
Blocks: CVE-2023-52425
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Reported: 2024-03-11 23:40 UTC by Sebastian Pipping
Modified: 2024-04-14 22:00 UTC (History)
2 users (show)

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Package list:
Runtime testing required: ---

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Description Sebastian Pipping gentoo-dev 2024-03-11 23:40:40 UTC 
Quick heads up, upstream release 2.6.2 with the fix coming up shortly.
Comment 1 Larry the Git Cow gentoo-dev 2024-03-13 17:19:07 UTC 
The bug has been referenced in the following commit(s):

https://gitweb.gentoo.org/repo/gentoo.git/commit/?id=b5ae6bfa8a1411b05e9fbd76792144b7824e9379

commit b5ae6bfa8a1411b05e9fbd76792144b7824e9379
Author:     Sebastian Pipping <sping@gentoo.org>
AuthorDate: 2024-03-13 17:18:05 +0000
Commit:     Sebastian Pipping <sping@gentoo.org>
CommitDate: 2024-03-13 17:18:32 +0000

    dev-libs/expat: 2.6.2 with fix for CVE-2024-28757
    
    Bug: https://bugs.gentoo.org/926786
    Signed-off-by: Sebastian Pipping <sping@gentoo.org>

 dev-libs/expat/Manifest           |   1 +
 dev-libs/expat/expat-2.6.2.ebuild | 101 ++++++++++++++++++++++++++++++++++++++
 2 files changed, 102 insertions(+)
Comment 2 John Helmert III archtester Gentoo Infrastructure gentoo-dev Security 2024-03-17 04:03:50 UTC 
Please stable when ready.
Comment 3 Sebastian Pipping gentoo-dev 2024-03-17 12:39:04 UTC 
(In reply to John Helmert III from comment #2)
> Please stable when ready.

I'm biased about it (being Expat's upstream maintainer), but someone will have to make a decision whether bug #924601 is a blocker to stabilization or not, I'm adding it as a potential blocker for now until someone  else removes it as a conscious decision.  ClusterShell tests will break through stabilization, not sure if the application itself.  We could in theory try to get an answer on that from Clustershell upstream (just asked at https://github.com/cea-hpc/clustershell/pull/556#issuecomment-2002439361), before making a move, with a timeout of a few days maybe.  What do you think?

I'm also making bug #923951 depend on bug #926786 (right here), please adjust as you see fits.