HIGH
spamassassin: crafted email message can lead to DoS
Published Dec 12, 2019
7.5
HIGHCVSS 3.1
EPSS 7.23%
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.
Affected products
-
- Version Apache SpamAssassin prior to 3.4.3StatusaffectedConstraints-
- Version
Default status is the baseline for the product, each version can override it (e.g. patched versions marked unaffected).
| Vendor | Product | Default status | Versions | ||||||
|---|---|---|---|---|---|---|---|---|---|
| Apache | Apache SpamAssassin | n/a |
|
Configuration 1
- < 3.4.3
Configuration 2
OR
- 8.0
- 9.0
- 10.0
No data.
Red Hat Enterprise Linux 7
spamassassin-0:3.4.0-6.el7
Fixed · RHSA-2020:3973
Red Hat Enterprise Linux 8
spamassassin-0:3.4.2-10.el8
Fixed · RHSA-2020:4625
Red Hat Enterprise Linux 5
spamassassin
Out of support scope
Red Hat Enterprise Linux 6
spamassassin
Out of support scope
| Product | Package | State | Advisory |
|---|---|---|---|
| Red Hat Enterprise Linux 7 | spamassassin-0:3.4.0-6.el7 | Fixed | RHSA-2020:3973 |
| Red Hat Enterprise Linux 8 | spamassassin-0:3.4.2-10.el8 | Fixed | RHSA-2020:4625 |
| Red Hat Enterprise Linux 5 | spamassassin | Out of support scope | n/a |
| Red Hat Enterprise Linux 6 | spamassassin | Out of support scope | n/a |
No package ranges for this CVE.
Remediation
No remediation recorded yet.
Metrics
No CVSS v4.0 score for this CVE.
7.5 HIGH NVD
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Attack Vector Network
Attack Complexity Low
Privileges Required None
User Interaction None
Scope Unchanged
Confidentiality Impact None
Integrity Impact None
Availability Impact High
No CVSS v3.0 score for this CVE.
5.0 MEDIUM NVD
AV:N/AC:L/Au:N/C:N/I:N/A:P
Access Vector Network
Access Complexity Low
Authentication None
Confidentiality Impact None
Integrity Impact None
Availability Impact Partial
This CVE is not in the KEV list.
No CISA SSVC assessment for this CVE yet.
7.23% 0.07234
Estimated probability of exploitation in the wild in the next 30 days (FIRST EPSS). As of Oct 2, 2026.
EPSS probability 0.07234
Score over time
2021–2026- EPSS v1
- EPSS v2
- EPSS v3
- EPSS v4
- EPSS v5
Percentile over time
- EPSS v1
- EPSS v2
- EPSS v3
- EPSS v4
- EPSS v5
Table of values (24 key points)
Flat stretches are collapsed; showing up to 120 newest points.
| Date | Score | Percentile | Model |
|---|---|---|---|
| Oct 2, 2026 | 7.23% (0.07234) | 94.15th | v5 (v2026.06.15) |
| Jun 15, 2026 | 7.23% (0.07234) | 93.51th | v5 (v2026.06.15) |
| May 31, 2026 | 17.69% (0.17694) | 95.23th | v4 (v2025.03.14) |
| Nov 21, 2025 | 13.68% (0.13675) | 93.98th | v4 (v2025.03.14) |
| Nov 18, 2025 | 38.83% (0.38828) | 97.09th | v4 (v2025.03.14) |
| Apr 19, 2025 | 13.68% (0.13675) | 93.84th | v4 (v2025.03.14) |
| Mar 30, 2025 | 17.69% (0.17694) | 94.58th | v4 (v2025.03.14) |
| Mar 29, 2025 | 25.45% (0.25450) | 93.89th | v4 (v2025.03.14) |
| Mar 17, 2025 | 17.69% (0.17694) | 94.60th | v4 (v2025.03.14) |
| Dec 17, 2024 | 3.91% (0.03908) | 91.87th | v3 (v2023.03.01) |
| Dec 12, 2024 | 0.81% (0.00810) | 82.46th | v3 (v2023.03.01) |
| Jun 26, 2024 | 0.86% (0.00860) | 82.40th | v3 (v2023.03.01) |
| Nov 18, 2023 | 0.86% (0.00860) | 80.40th | v3 (v2023.03.01) |
| Nov 8, 2023 | 0.75% (0.00754) | 78.86th | v3 (v2023.03.01) |
| Nov 2, 2023 | 1.03% (0.01035) | 82.27th | v3 (v2023.03.01) |
| Oct 16, 2023 | 1.20% (0.01202) | 83.64th | v3 (v2023.03.01) |
| Mar 7, 2023 | 1.18% (0.01175) | 82.78th | v3 (v2023.03.01) |
| Mar 6, 2023 | 5.24% (0.05242) | 89.75th | v2 (v2022.01.01) |
| Apr 1, 2022 | 5.24% (0.05242) | 88.72th | v2 (v2022.01.01) |
| Feb 4, 2022 | 34.28% (0.34284) | 96.67th | v2 (v2022.01.01) |
| Feb 3, 2022 | 30.02% (0.30022) | 96.62th | v1 |
| Jan 6, 2022 | 30.02% (0.30022) | 96.58th | v1 |
| Sep 1, 2021 | 8.73% (0.08728) | 93.15th | v1 |
| Apr 14, 2021 | 8.73% (0.08728) | 0.00th | v1 |
Weaknesses (2)
References (18)
- http://www.openwall.com/lists/oss-security/2019/12/12/2 mailing-listx_refsource_MLISTMailing ListThird Party Advisory
- https://access.redhat.com/security/cve/CVE-2019-12420 Vendor Advisory
- https://bugzilla.redhat.com/show_bug.cgi?id=1784984 Issue Tracking
- https://bz.apache.org/SpamAssassin/show_bug.cgi?id=7747 x_refsource_MISCPermissions Required
- https://lists.apache.org/thread.html/5863d6c42fc9595a29566732f12348cde0ca0e41bda91695c62041de%40%3Cannounce.apache.org%3E mailing-listx_refsource_MLIST
- https://lists.apache.org/thread.html/5ef362d6da12126fafc81443309ca95d872d1bfd011fe4b2699f0fe9%40%3Cusers.spamassassin.apache.org%3E mailing-listx_refsource_MLIST
- https://lists.apache.org/thread.html/64cf76749956dd08f7d5b86ec9f3321f382cfd7fe717ccd1be940c92%40%3Cannounce.spamassassin.apache.org%3E mailing-listx_refsource_MLIST
- https://lists.apache.org/thread.html/e3c2367351286b77a74a082e2b66b793cceefa7b6ea9dcd162db4c4b%40%3Cdev.spamassassin.apache.org%3E mailing-listx_refsource_MLIST
- https://lists.apache.org/thread.html/r2578c486552637bfedbe624940cc60d6463bd90044c887bdebb75e74%40%3Cusers.spamassassin.apache.org%3E mailing-listx_refsource_MLIST
- https://lists.apache.org/thread.html/r3d32ebf97b1245b8237763444e911c4595d2ad5e34a1641840d8146f%40%3Cusers.spamassassin.apache.org%3E mailing-listx_refsource_MLIST
- https://lists.debian.org/debian-lts-announce/2019/12/msg00019.html mailing-listx_refsource_MLISTMailing ListThird Party Advisory
- https://nvd.nist.gov/vuln/detail/CVE-2019-12420
- https://seclists.org/bugtraq/2019/Dec/27 mailing-listx_refsource_BUGTRAQMailing ListThird Party Advisory
- https://svn.apache.org/repos/asf/spamassassin/branches/3.4/build/announcements/3.4.3.txt x_refsource_CONFIRMMailing ListVendor Advisory
- https://usn.ubuntu.com/4237-1/ vendor-advisoryx_refsource_UBUNTU
- https://usn.ubuntu.com/4237-2/ vendor-advisoryx_refsource_UBUNTU
- https://www.cve.org/CVERecord?id=CVE-2019-12420
- https://www.debian.org/security/2019/dsa-4584 vendor-advisoryx_refsource_DEBIANThird Party Advisory
Change history (0)
No recorded changes yet.
Sources
CVE.org / MITRE
Status PUBLISHED
Assigner apache
Published Dec 12, 2019
Updated Aug 4, 2024
Reserved May 28, 2019
Link CVE-2019-12420
CISA Vulnrichment
Updated n/a