CVE-2017-15939

Description

dwarf2.c in the Binary File Descriptor (BFD) library (aka libbfd), as distributed in GNU Binutils 2.29, mishandles NULL files in a .debug_line file table, which allows remote attackers to cause a denial of service (NULL pointer dereference and application crash) via a crafted ELF file, related to concat_filename. NOTE: this issue is caused by an incomplete fix for CVE-2017-15023.

Category

5.5
CVSS
Severity: Medium
CVSS 3.0 •
CVSS 2.0 •
EPSS 0.15%
Vendor Advisory gentoo.org
Affected: n/a n/a
Published at:
Updated at:

References

Link Tags
https://security.gentoo.org/glsa/201801-01 vendor advisory
https://sourceware.org/bugzilla/show_bug.cgi?id=22205 patch third party advisory issue tracking
https://sourceware.org/git/gitweb.cgi?p=binutils-gdb.git%3Bh=a54018b72d75abf2e74bf36016702da06399c1d9
http://www.securityfocus.com/bid/101613 vdb entry
https://blogs.gentoo.org/ago/2017/10/24/binutils-null-pointer-dereference-in-concat_filename-dwarf2-c-incomplete-fix-for-cve-2017-15023/ patch third party advisory issue tracking

Frequently Asked Questions

What is the severity of CVE-2017-15939?
CVE-2017-15939 has been scored as a medium severity vulnerability.
How to fix CVE-2017-15939?
To fix CVE-2017-15939, make sure you are using an up-to-date version of the affected component(s) by checking the vendor release notes. As for now, there are no other specific guidelines available.
Is CVE-2017-15939 being actively exploited in the wild?
As for now, there are no information to confirm that CVE-2017-15939 is being actively exploited. According to its EPSS score, there is a ~0% probability that this vulnerability will be exploited by malicious actors in the next 30 days.
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