VulnerabilityModified

CVE-2016-9558

(1) libdwarf/dwarf_leb.c and (2) dwarfdump/print_frames.c in libdwarf before 20161124 allow remote attackers to have unspecified impact via a crafted bit pattern in a signed leb number, aka a "negation overflow."

CRITICAL 9.8EPSS 5.11%

Does this matter?

High impact if exploited, but EPSS currently rates exploitation as unlikely (5.11%). Schedule it in the normal patch cycle and watch for a rise in EPSS or a public exploit.

Description

CVSS 3.1: 9.8 CRITICALCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
EPSS: 5.11% probability · 92th percentile
CISA KEV: Not listed
Weakness: CWE-190
Affected: libdwarf project/libdwarf
Source: cve@mitre.org

References

http://www.openwall.com/lists/oss-security/2016/11/19/6Mailing List, Patch, Third Party Advisory
http://www.openwall.com/lists/oss-security/2016/11/23/3Mailing List, Patch, Third Party Advisory
http://www.securityfocus.com/bid/94491Third Party Advisory, VDB Entry
https://blogs.gentoo.org/ago/2016/11/19/libdwarf-negation-overflow-in-dwarf_leb-c/Exploit, Patch, Third Party Advisory, VDB Entry
https://sourceforge.net/p/libdwarf/code/ci/4f19e1050cd8e9ddf2cb6caa061ff2fec4c9b5f9/#diff-5Third Party Advisory
https://www.prevanders.net/dwarfbug.htmlThird Party Advisory
http://www.openwall.com/lists/oss-security/2016/11/19/6Mailing List, Patch, Third Party Advisory
http://www.openwall.com/lists/oss-security/2016/11/23/3Mailing List, Patch, Third Party Advisory
http://www.securityfocus.com/bid/94491Third Party Advisory, VDB Entry
https://blogs.gentoo.org/ago/2016/11/19/libdwarf-negation-overflow-in-dwarf_leb-c/Exploit, Patch, Third Party Advisory, VDB Entry
https://sourceforge.net/p/libdwarf/code/ci/4f19e1050cd8e9ddf2cb6caa061ff2fec4c9b5f9/#diff-5Third Party Advisory
https://www.prevanders.net/dwarfbug.htmlThird Party Advisory

Source: NVD record, EPSS from FIRST.org, KEV from CISA. Refreshed daily.