Vulnerability Description
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.
CVSS Score
HIGH
Affected Products
| Vendor | Product | Versions |
|---|---|---|
| Sa-Exim Project | Sa-Exim | 4.2.1 |
| Canonical | Ubuntu Linux | 16.04 |
| Debian | Debian Linux | 8.0 |
Related Weaknesses (CWE)
References
- https://bugs.debian.org/946829#24Mailing ListPatchThird Party Advisory
- https://lists.debian.org/debian-lts-announce/2020/01/msg00006.htmlMailing ListThird Party Advisory
- https://marc.info/?l=spamassassin-users&m=157668107325768&w=2Mailing ListThird Party Advisory
- https://marc.info/?l=spamassassin-users&m=157668305026635&w=2Mailing ListThird Party Advisory
- https://usn.ubuntu.com/4520-1/Third Party Advisory
- https://bugs.debian.org/946829#24Mailing ListPatchThird Party Advisory
- https://lists.debian.org/debian-lts-announce/2020/01/msg00006.htmlMailing ListThird Party Advisory
- https://marc.info/?l=spamassassin-users&m=157668107325768&w=2Mailing ListThird Party Advisory
- https://marc.info/?l=spamassassin-users&m=157668305026635&w=2Mailing ListThird Party Advisory
- https://usn.ubuntu.com/4520-1/Third Party Advisory
FAQ
What is CVE-2019-19920?
CVE-2019-19920 is a vulnerability with a CVSS score of 8.8 (HIGH). 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 f...
How severe is CVE-2019-19920?
CVE-2019-19920 has been rated HIGH with a CVSS base score of 8.8/10. Review the CVSS metrics above for detailed severity breakdown.
Is there a patch for CVE-2019-19920?
Check the references section above for vendor advisories and patch information. Affected products include: Sa-Exim Project Sa-Exim, Canonical Ubuntu Linux, Debian Debian Linux.