CVE-2016-9558

moderate-risk
Published 2017-02-28

(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."

Do I need to act?

~
1.2% chance of exploitation in next 30 days
EPSS score — moderate exploit probability
-
Not on CISA KEV list
No confirmed active exploitation reported to CISA
+
Fix available
Upgrade to: fd1d490f0815994a870744d99660ed72585f3741
9
CVSS 9.8/10 Critical
NETWORK / LOW complexity

Affected Products (1)

Affected Vendors

Libdwarf Project

References (12)

Mailing List http://www.openwall.com/lists/oss-security/2016/11/19/6
Mailing List http://www.openwall.com/lists/oss-security/2016/11/23/3
Third Party Advisory http://www.securityfocus.com/bid/94491
Exploit https://blogs.gentoo.org/ago/2016/11/19/libdwarf-negation-overflow-in-dwarf_leb-...
Third Party Advisory https://sourceforge.net/p/libdwarf/code/ci/4f19e1050cd8e9ddf2cb6caa061ff2fec4c9b...
Third Party Advisory https://www.prevanders.net/dwarfbug.html
Mailing List http://www.openwall.com/lists/oss-security/2016/11/19/6
Mailing List http://www.openwall.com/lists/oss-security/2016/11/23/3
Third Party Advisory http://www.securityfocus.com/bid/94491
Exploit https://blogs.gentoo.org/ago/2016/11/19/libdwarf-negation-overflow-in-dwarf_leb-...
Third Party Advisory https://sourceforge.net/p/libdwarf/code/ci/4f19e1050cd8e9ddf2cb6caa061ff2fec4c9b...
Third Party Advisory https://www.prevanders.net/dwarfbug.html
40
/ 100
moderate-risk
Severity 32/34 · Critical
Exploitability 3/34 · Minimal
Exposure 5/34 · Minimal