Improper input validation in Gnu Bash
CVE-2016-7543
Bash before 4.4 allows local users to execute arbitrary commands with root privileges via crafted SHELLOPTS and PS4 environment variables.
Vulnerability class: Drupalgeddon 2 (CVE-2018-7600)
EPSS: 0.001 (27.0th percentile) — read the EPSS interpretation.
CVSS v3 metric
CVSS v3 base score 8.4 (High). Vector: CVSS:3.0/AV:L/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H.
Affected products
- Gnu Bash
- Fedoraproject Fedora — versions 23, 24, 25
- N/a — versions n/a
Weakness classification (CWE)
Public proof-of-concept exploits
References
- cve@mitre.org (x_refsource_REDHAT, vendor-advisory)
- cve@mitre.org (vendor-advisory, x_refsource_FEDORA)
- cve@mitre.org (x_refsource_REDHAT, vendor-advisory)
- cve@mitre.org (vendor-advisory, x_refsource_FEDORA)
- cve@mitre.org (mailing-list, x_refsource_MLIST, Mailing List, Third Party Advisory)
- cve@mitre.org (Vendor Advisory, mailing-list, x_refsource_MLIST, Patch)
- cve@mitre.org (VDB Entry, Third Party Advisory, vdb-entry, x_refsource_BID)
- cve@mitre.org (x_refsource_CONFIRM)
- cve@mitre.org (vendor-advisory, x_refsource_FEDORA)
- cve@mitre.org (vdb-entry, x_refsource_SECTRACK)
Frequently asked questions
- What is CVE-2016-7543?
- CVE-2016-7543 is a high-severity vulnerability in Gnu Bash, classified under Improper Input Validation. CVSS score: 8.4/10. Published 2017-01-19.
- How severe is CVE-2016-7543?
- High severity. CVSS v3 base score is 8.4 out of 10.
- Is CVE-2016-7543 known to be exploited?
- 7 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.