Bug 1906777 (CVE-2020-16592) - CVE-2020-16592 binutils: use-after-free in bfd_hash_lookup could result in DoS
Summary: CVE-2020-16592 binutils: use-after-free in bfd_hash_lookup could result in DoS
Keywords:
Status: CLOSED WONTFIX
Alias: CVE-2020-16592
Product: Security Response
Classification: Other
Component: vulnerability
Version: unspecified
Hardware: All
OS: Linux
medium
medium
Target Milestone: ---
Assignee: Red Hat Product Security
QA Contact:
URL:
Whiteboard:
Depends On: 1906778 1906779
Blocks: 1906786
TreeView+ depends on / blocked
 
Reported: 2020-12-11 11:56 UTC by Michael Kaplan
Modified: 2021-02-16 18:44 UTC (History)
23 users (show)

Fixed In Version: binutils 2.35
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Clone Of:
Environment:
Last Closed: 2020-12-23 00:27:51 UTC
Embargoed:

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Description Michael Kaplan 2020-12-11 11:56:00 UTC 
A use after free issue exists in the Binary File Descriptor (BFD) library (aka libbfd) in GNU Binutils 2.34 in bfd_hash_lookup, as demonstrated in nm-new, that can cause a denial of service via a crafted file.

External References:

https://sourceware.org/bugzilla/show_bug.cgi?id=25823
https://sourceware.org/git/gitweb.cgi?p=binutils-gdb.git;h=7ecb51549ab1ec22aba5aaf34b70323cf0b8509a
Comment 1 Michael Kaplan 2020-12-11 11:56:48 UTC 
Created binutils tracking bugs for this issue:

Affects: fedora-32 [bug 1906778]


Created mingw-binutils tracking bugs for this issue:

Affects: fedora-all [bug 1906779]
Comment 5 Todd Cullum 2020-12-22 20:11:29 UTC 
Statement:

binutils as shipped in Red Hat Developer Toolsets 9 and 10, Red Hat Enterprise Linux 8 BaseOS and GCC Toolsets 9 and 10, are all not affected by this flaw as it was introduced in a newer version of binutils code than shipped for BaseOS and the 9 toolsets, and already patched in the versions shipped with 10 toolsets.
Comment 6 Product Security DevOps Team 2020-12-23 00:27:51 UTC 
This bug is now closed. Further updates for individual products will be reflected on the CVE page(s):

https://access.redhat.com/security/cve/cve-2020-16592
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