RCE in Sa-Exim Project
CVE-2019-19920
sa-exim 4.2.1 allows attackers to execute arbitrary code if they can write a .cf file or a rule. This occurs because Greylisting.pm relies on eval (rather than direct parsing and/or use of the taint feature). This issue is similar to CVE-2018-11805.
Vulnerability class: Command Injection (OS Command Injection)
Published · last modified .
CVSS v3 metric
CVSS v3 base score 8.8 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H.
EPSS exploit prediction
EPSS: 0.032 (87.6th percentile), scored .
Low probability of exploitation in the next 30 days, but still tracked. 88th percentile — 87.6% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.032 · newest: 0.032 · change: 0.000
Affected products
- Sa-Exim Project — versions 4.2.1
- Canonical Ubuntu Linux — versions 16.04
- Debian Linux — versions 8.0, 9.0, 10.0
Weakness classification (CWE)
Public proof-of-concept exploits
References
- bugs.debian.org/946829 (Patch, Mailing List, Third Party Advisory)
- marc.info/ (Mailing List, Third Party Advisory)
- marc.info/ (Mailing List, Third Party Advisory)
- lists.debian.org/debian-lts-announce/2020/01/msg00006.html (mailing-list, Mailing List, Third Party Advisory)
- usn.ubuntu.com/4520-1/ (vendor-advisory, Third Party Advisory)
Frequently asked questions
- What is CVE-2019-19920?
- CVE-2019-19920 is a high-severity vulnerability in Sa-Exim Project, classified under OS Command Injection. CVSS score: 8.8/10. Published 2019-12-22.
- How severe is CVE-2019-19920?
- High severity. CVSS v3 base score is 8.8 out of 10.
- Is CVE-2019-19920 known to be exploited?
- 1 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.