Bug 2186291 (CVE-2023-29580) - CVE-2023-29580 yasm: segmentation violation in yasm_expr_create() in libyasm/expr.c
Summary: CVE-2023-29580 yasm: segmentation violation in yasm_expr_create() in libyasm/...
Keywords:
Status: NEW
Alias: CVE-2023-29580
Product: Security Response
Classification: Other
Component: vulnerability
Version: unspecified
Hardware: All
OS: Linux
low
low
Target Milestone: ---
Assignee: Nobody
QA Contact:
URL:
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Depends On: 2186292 2186293 2186871 2186872
Blocks: 2186271
TreeView+ depends on / blocked
 
Reported: 2023-04-12 17:27 UTC by Pedro Sampaio
Modified: 2024-03-15 23:31 UTC (History)
3 users (show)

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Description Pedro Sampaio 2023-04-12 17:27:51 UTC
yasm 1.3.0.55.g101bc was discovered to contain a segmentation violation via the component yasm_expr_create at /libyasm/expr.c.

References:
https://github.com/yasm/yasm/issues/215
https://github.com/z1r00/fuzz_vuln/blob/main/yasm/segv/yasm_expr_create/readmd.md

Comment 1 Pedro Sampaio 2023-04-12 17:28:07 UTC
Created yasm tracking bugs for this issue:

Affects: epel-all [bug 2186293]
Affects: fedora-all [bug 2186292]

Comment 4 Siddhesh Poyarekar 2023-04-14 18:27:35 UTC
Why is this a security issue? Assemblers are not a service and shouldn't be required to accept untrusted input.  Admittedly this is in a library, which may in theory be used to implement services, but I can't imagine this being a safe thing to do regardless of this bug.

Comment 5 Pedro Sampaio 2023-04-14 21:09:21 UTC
(In reply to Siddhesh Poyarekar from comment #4)
> Why is this a security issue? Assemblers are not a service and shouldn't be
> required to accept untrusted input.  Admittedly this is in a library, which
> may in theory be used to implement services, but I can't imagine this being
> a safe thing to do regardless of this bug.

As far as I can see, this CVE was not assigned by us, but by Mitre and since it was published, we have to file the bug nonetheless. Any requests to reject this CVE ID have to be directed to Mitre via cveform:

https://cveform.mitre.org/


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