CVE-2019-14868
In ksh version 20120801, a flaw was found in the way it evaluates certain environment variables. An attacker could use this flaw to override or bypass environment restrictions to execute shell
02 Description
In ksh version 20120801, a flaw was found in the way it evaluates certain environment variables. An attacker could use this flaw to override or bypass environment restrictions to execute shell
03 Exploitation and scoring
- Exploitation
- Not assessed. CISA has not published an exploitation assessment for this record, and it is not in the KEV catalog. That is an absence of assessment, not a finding of no risk.
- SSVC decision
- Not assessed by CISA
- EPSS probability
- 1.38% probability of exploitation activity in the next 30 days.
- EPSS percentile
- Equal to or higher than the score of 71.9% of scored records. A rank, not a probability.
- NVD base score
- 7.8 (CVSS v3.x), scored by the NVD independently of the CNA.
- NVD CVSS vector
- CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
- NVD analysis status
- Modified. NVD last modified this record on 2026-06-17.
- Red Hat severity
- Important. Red Hat's rating for its own products, not a CVSS rating.
Exploit-prediction scores from FIRST. Independent scoring and analysis status from the NVD. Vendor severity from Red Hat. Exploitation assessment and catalog membership from CISA.
04 Metadata
- Published
- 2020-04-02 16:48Z6 YR AGO
- Last updated
- 2024-08-05 00:26Z2 YR AGO
- Reserved
- 2019-08-10
- Assigning CNA
- redhat
- Record state
- PUBLISHED
- Severity
- High (CVSS 7.4)
- CNA CVSS vector
- CVSS:3.1/AV:L/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H
- Weaknesses
- CWE-77Improper Neutralization of Special Elements used in a Command ('Command Injection')Class
- Data version
- 5.1
- Document digest
- abce714f99e8588d72a428d50f83e9f048927955799472f477d1e56c333ee6ed
05 Affected products
06 References
- bugzilla.redhat.comhttps://bugzilla.redhat.com/show_bug.cgi?id=CVE-2019-14868
- github.comhttps://github.com/att/ast/commit/c7de8b641266bac7c77942239ac659edfee9ecd2
- support.apple.comhttps://support.apple.com/kb/HT211170
- seclists.org20200529 APPLE-SA-2020-05-26-3 macOS Catalina 10.15.5, Security Update 2020-003 Mojave, Security Update 2020-003 High Sierrahttp://seclists.org/fulldisclosure/2020/May/53
- lists.debian.org[debian-lts-announce] 20200720 [SECURITY] [DLA 2284-1] ksh security updatehttps://lists.debian.org/debian-lts-announce/2020/07/msg00015.html
07 Fixed in
Arch Linux
- ksh Fixed in 2020.0.0-2
Source: Arch Linux Security Tracker, the Arch Linux security team. Reformatted by exploit.cc.
Debian 11
- ksh Fixed in 2020.0.0-2.1
Source: Debian Security Tracker, the Debian security team. Received through OSV.dev. Reformatted by exploit.cc.
Ubuntu 16.04 LTS
- ksh No fix yet
Source: Ubuntu, Canonical Ltd. Licensed under CC BY-SA 4.0. Received through OSV.dev. Reformatted by exploit.cc.
Ubuntu 18.04 LTS
- ksh No fix yet
Source: Ubuntu, Canonical Ltd. Licensed under CC BY-SA 4.0. Received through OSV.dev. Reformatted by exploit.cc.
Ubuntu Pro 14.04 LTS
- ksh Fixed in 93u+20120801-1ubuntu0.14.04.1+esm1Available with Ubuntu Pro (Infra-only): https://ubuntu.com/pro
Source: Ubuntu, Canonical Ltd. Licensed under CC BY-SA 4.0. Received through OSV.dev. Reformatted by exploit.cc.
A release or ecosystem missing from this list has no record here. It may be unaffected or not covered by the source. Source notices and licences.