CVE-2016-7543: fedoraproject fedora Improper Input Validation
CVSS: 8.4v3.0HighModified
AliasesUBUNTU-CVE-2016-7543DEBIAN-CVE-2016-7543DLA-680-1
Published 19-01-2017Last modified 06-08-2024
Vulnerability summary
CVE-2016-7543 is a high (CVSS 8.4) Improper Input Validation vulnerability in fedoraproject fedora. EPSS estimates a 0.58% chance of exploitation in the next 30 days, higher than 46.3% of scored vulnerabilities.
CVSS score
8.4/10
010
High · v3.0 (NVD)EPSS score
0.58%
0%100%
Low · 0.00 pp in 30 daysKEVNot listedIn no KEV catalog
RansomwareNone recordedNo known use recorded
Public exploits0No public exploits recorded
Advisory lineage
Upstream 0 · Downstream 8 · Related 5Timeline
- 19-01-2017PublishedVulnerability first disclosed.
- 06-08-2024Last modifiedVulnerability information updated.
Description
Bash before 4.4 allows local users to execute arbitrary commands with root privileges via crafted SHELLOPTS and PS4 environment variables.
CVSS metrics
4 scores · 3 sources · 2 versionsHigh 8.4Preferred score · NVD (NIST)
CVSS:3.0/AV:L/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:HSourcesAll 3 agree
- OSV · UbuntuEcosystem advisory · calculated8.4HighCVSS:3.0/AV:L/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
- OSV · DebianEcosystem advisory · calculated8.4HighCVSS:3.0/AV:L/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
High 7.2Preferred score · NVD (NIST)
AV:L/AC:L/Au:N/C:C/I:C/A:CSourcesSingle source
EPSS trend
Probability
0.58%
Chance of exploitation in the next 30 days
Percentile
46%
Versus all other CVEs
30-day change
0.00 pp
From 0.58% on 18-09-2026
18-09-202618-10-2026
EPSS score0.58%
Known exploited
Compare KEV catalogsNot in any of the 3 tracked catalogs.
Public exploits
0 foundNo public exploits indexed.
Weaknesses
CWE · root causeAffected systems
Debian1 product
- bash< 4.4-1 | < 4.2+dfsg-0.1+deb7u4
Fedoraproject1 product
- fedoraEOL23 | 24 | 25
Gnu1 product
- bash≤ 4.3
Ubuntu1 product
- bash< 4.3-7ubuntu1.7 | < 4.3-14ubuntu1.2
4 vendors · 4 products
References
16 links- www.openwall.com/lists/oss-security/2016/09/26/9Mailing ListX Refsource MLISTThird Party AdvisoryREPORT
- lists.gnu.org/archive/html/bug-bash/2016-09/msg00018.htmlMailing ListX Refsource MLISTPatchVendor Advisory
