CVE-2016-7543
high
CVSS v3
8.4
CVSS v4 NEW
—
VIR risk
8.4
Description
Bash before 4.4 allows local users to execute arbitrary commands with root privileges via crafted SHELLOPTS and PS4 environment variables.
Predictions
Exploit likelihood
80%
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
| OS | Version | Status | Fixed in |
|---|---|---|---|
| debian | bookworm | fixed | 4.4-1 |
| debian | bullseye | fixed | 4.4-1 |
| debian | forky | fixed | 4.4-1 |
| debian | sid | fixed | 4.4-1 |
| debian | trixie | fixed | 4.4-1 |
| sles | affected | | |
| fedora | 23 | affected | |
| fedora | 24 | affected | |
| fedora | 25 | affected | |
Application impact
| Vendor | Product | Versions | Fixed |
|---|---|---|---|
| gnu | bash | {"endIncluding":"4.3"} | |
References
- http://rhn.redhat.com/errata/RHSA-2017-0725.html
- http://www.openwall.com/lists/oss-security/2016/09/26/9
- http://www.securityfocus.com/bid/93183
- http://www.securitytracker.com/id/1037812
- https://access.redhat.com/errata/RHSA-2017:1931
- https://h20566.www2.hpe.com/portal/site/hpsc/public/kb/docDisplay?docId=emr_na-c05388115
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/F7XOQSHU63Y357NHU5FPTFBM6I3YOCQB/
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/OU3C756YPHDAAPFX76UGZBAQQQ5UMHS5/
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/Z2VRBSIPZDZ75ZQ2DLITHUIDW4W26KVR/
- https://lists.gnu.org/archive/html/bug-bash/2016-09/msg00018.html
- https://security.gentoo.org/glsa/201701-02
- https://security-tracker.debian.org/tracker/CVE-2016-7543
- https://www.suse.com/security/cve/CVE-2016-7543.html
CWEs
CWE-20
Community-verified mitigations for this CVE will appear above when contributors publish them.
Verify integrity in audit chain (admin only). AS-IS.