CVE-2019-12420
In Apache SpamAssassin before 3.4.3, a message can be crafted in a way to use excessive resources.
Does this matter?
High impact if exploited, but EPSS currently rates exploitation as unlikely (7.23%). Schedule it in the normal patch cycle and watch for a rise in EPSS or a public exploit.
Description
In Apache SpamAssassin before 3.4.3, a message can be crafted in a way to use excessive resources. Upgrading to SA 3.4.3 as soon as possible is the recommended fix but details will not be shared publicly.
- CVSS 3.1
- 7.5 HIGHCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
- EPSS
- 7.23% probability · 94th percentile
- Public exploits
- None in Exploit-DB
- CISA KEV
- Not listed
- Weakness
- CWE-400
- Affected
- apache/spamassassin · debian/debian linux
- Source
- security@apache.org
EPSS 7.2% since 27 October 2026; no change recorded yet. The dashed line is the ten per cent mark our analysts treat as “patch before the next change window”. Points are recorded when the score first appears and whenever it moves by a percentage point or more.
References
- http://www.openwall.com/lists/oss-security/2019/12/12/2Mailing List, Third Party Advisory
- https://bz.apache.org/SpamAssassin/show_bug.cgi?id=7747Permissions Required
- https://lists.apache.org/thread.html/5863d6c42fc9595a29566732f12348cde0ca0e41bda91695c62041de%40%3Cannounce.apache.org%3E
- https://lists.apache.org/thread.html/5ef362d6da12126fafc81443309ca95d872d1bfd011fe4b2699f0fe9%40%3Cusers.spamassassin.apache.org%3E
- https://lists.apache.org/thread.html/64cf76749956dd08f7d5b86ec9f3321f382cfd7fe717ccd1be940c92%40%3Cannounce.spamassassin.apache.org%3E
- https://lists.apache.org/thread.html/e3c2367351286b77a74a082e2b66b793cceefa7b6ea9dcd162db4c4b%40%3Cdev.spamassassin.apache.org%3E
- https://lists.apache.org/thread.html/r2578c486552637bfedbe624940cc60d6463bd90044c887bdebb75e74%40%3Cusers.spamassassin.apache.org%3E
- https://lists.apache.org/thread.html/r3d32ebf97b1245b8237763444e911c4595d2ad5e34a1641840d8146f%40%3Cusers.spamassassin.apache.org%3E
- https://lists.debian.org/debian-lts-announce/2019/12/msg00019.htmlMailing List, Third Party Advisory
- https://seclists.org/bugtraq/2019/Dec/27Mailing List, Third Party Advisory
- https://svn.apache.org/repos/asf/spamassassin/branches/3.4/build/announcements/3.4.3.txtMailing List, Vendor Advisory
- https://usn.ubuntu.com/4237-1/
- https://usn.ubuntu.com/4237-2/
- https://www.debian.org/security/2019/dsa-4584Third Party Advisory
- http://www.openwall.com/lists/oss-security/2019/12/12/2Mailing List, Third Party Advisory
- https://bz.apache.org/SpamAssassin/show_bug.cgi?id=7747Permissions Required
- https://lists.apache.org/thread.html/5863d6c42fc9595a29566732f12348cde0ca0e41bda91695c62041de%40%3Cannounce.apache.org%3E
- https://lists.apache.org/thread.html/5ef362d6da12126fafc81443309ca95d872d1bfd011fe4b2699f0fe9%40%3Cusers.spamassassin.apache.org%3E
- https://lists.apache.org/thread.html/64cf76749956dd08f7d5b86ec9f3321f382cfd7fe717ccd1be940c92%40%3Cannounce.spamassassin.apache.org%3E
- https://lists.apache.org/thread.html/e3c2367351286b77a74a082e2b66b793cceefa7b6ea9dcd162db4c4b%40%3Cdev.spamassassin.apache.org%3E
- https://lists.apache.org/thread.html/r2578c486552637bfedbe624940cc60d6463bd90044c887bdebb75e74%40%3Cusers.spamassassin.apache.org%3E
- https://lists.apache.org/thread.html/r3d32ebf97b1245b8237763444e911c4595d2ad5e34a1641840d8146f%40%3Cusers.spamassassin.apache.org%3E
- https://lists.debian.org/debian-lts-announce/2019/12/msg00019.htmlMailing List, Third Party Advisory
- https://seclists.org/bugtraq/2019/Dec/27Mailing List, Third Party Advisory
- https://svn.apache.org/repos/asf/spamassassin/branches/3.4/build/announcements/3.4.3.txtMailing List, Vendor Advisory
- https://usn.ubuntu.com/4237-1/
- https://usn.ubuntu.com/4237-2/
- https://www.debian.org/security/2019/dsa-4584Third Party Advisory
Source: NVD record, EPSS from FIRST.org, KEV from CISA, exploits from Exploit-DB. Refreshed daily. Download this record as JSON.