CVE-2016-9558
critical
CVSS v3
9.8
CVSS v4 NEW
—
VIR risk
9.8
Description
(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."
Predictions
Exploit likelihood
97%
Patch ETA
—
Heuristic predictions, AS-IS, for prioritization only.
Mitigations
No mitigations published for this CVE yet.
The vendor-content worker queues fetches as references arrive (check back in a few minutes). Or — if you've already worked around this in production — publish your fix to the community-verified tier.
✚ Propose a mitigation on Community → Mitigations published via the community go through AI scoring + 2 human reviewers + 7-day silent objection window before landing here withsource_tier=community-verified.
OS impact
Arch Fixed 1 release
| Version | Status | Fixed in |
|---|---|---|
| — | Fixed | 20161124-1 |
Debian Fixed 5 releases
| Version | Status | Fixed in |
|---|---|---|
| trixie | Fixed | 20161124-1 |
| sid | Fixed | 20161124-1 |
| forky | Fixed | 20161124-1 |
| bullseye | Fixed | 20161124-1 |
| bookworm | Fixed | 20161124-1 |
Application impact
| Vendor | Product | Versions | Fixed |
|---|---|---|---|
| libdwarf_project | libdwarf | {"startIncluding":"1999-12-14","endExcluding":"2016-11-24"} | 2016-11-24 |
References
- https://security.archlinux.org/ASA-201612-4
- http://www.openwall.com/lists/oss-security/2016/11/19/6
- http://www.openwall.com/lists/oss-security/2016/11/23/3
- http://www.securityfocus.com/bid/94491
- https://blogs.gentoo.org/ago/2016/11/19/libdwarf-negation-overflow-in-dwarf_leb-c/
- https://sourceforge.net/p/libdwarf/code/ci/4f19e1050cd8e9ddf2cb6caa061ff2fec4c9b5f9/#diff-5
- https://www.prevanders.net/dwarfbug.html
- https://security-tracker.debian.org/tracker/CVE-2016-9558
CWEs
CWE-190
Community-verified mitigations for this CVE will appear above when contributors publish them.
Verify integrity in audit chain (admin only). AS-IS.