CVE-2020-16118
HIGHCVSS 7.5/10EPSS 2.05%
Last modified
CVE-2020-16118 is a high-severity vulnerability rated 7.5/10 on the CVSS scale. In GNOME Balsa before 2.6.0, a malicious server operator or man in the middle can trigger a NULL pointer dereference and client crash by sending a PREAUTH response to imap_mbox_connect in libbalsa/imap/imap-handle.c.. EPSS estimates a 2.05% chance of exploitation in the next 30 days.
Description
In GNOME Balsa before 2.6.0, a malicious server operator or man in the middle can trigger a NULL pointer dereference and client crash by sending a PREAUTH response to imap_mbox_connect in libbalsa/imap/imap-handle.c.
Metrics
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Weakness Enumeration
Affected Software
| Vendor | Product | Versions | Update |
|---|---|---|---|
| Gnome | Balsa | < 2.6.0 | — |
| Opensuse | Backports Sle | 15.0 | Sp1 |
| Opensuse | Leap | 15.1 | — |
References
- http://lists.opensuse.org/opensuse-security-announce/2020-08/msg00035.htmlMailing List, Third Party Advisory
- http://lists.opensuse.org/opensuse-security-announce/2020-08/msg00045.htmlMailing List, Third Party Advisory
- https://gitlab.gnome.org/GNOME/balsa/-/commit/4e245d758e1c826a01080d40c22ca8706f0339e5Patch, Third Party Advisory
- https://gitlab.gnome.org/GNOME/balsa/-/issues/23Exploit, Third Party Advisory
- http://lists.opensuse.org/opensuse-security-announce/2020-08/msg00035.htmlMailing List, Third Party Advisory
- http://lists.opensuse.org/opensuse-security-announce/2020-08/msg00045.htmlMailing List, Third Party Advisory
- https://gitlab.gnome.org/GNOME/balsa/-/commit/4e245d758e1c826a01080d40c22ca8706f0339e5Patch, Third Party Advisory
- https://gitlab.gnome.org/GNOME/balsa/-/issues/23Exploit, Third Party Advisory
Timeline
- Published
- Last Modified
- Status
- Modified
Frequently Asked Questions
What is CVE-2020-16118?
In GNOME Balsa before 2.6.0, a malicious server operator or man in the middle can trigger a NULL pointer dereference and client crash by sending a PREAUTH response to imap_mbox_connect in libbalsa/imap/imap-handle.c.
How severe is CVE-2020-16118?
CVE-2020-16118 has a CVSS score of 7.5/10 (HIGH severity). The EPSS model estimates a 2.05% probability of exploitation in the next 30 days.
How do I fix CVE-2020-16118?
Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.
How Strix Helps
- How Strix found a critical auth bypass in etcdStrix autonomously discovered a critical authentication bypass in etcd, later designated CVE-2026-33413.
- Autonomous PentestingAI agents that find and validate exploitable vulnerabilities like this one across your applications.
- PR ReviewsPentest every pull request so vulnerable code is caught before it ships to production.
- AI Penetration TestingHow AI-driven penetration testing continuously covers your attack surface.
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Are you affected by CVE-2020-16118?
Run a free Strix scan to check your systems for this vulnerability.
Scan your code nowSource: NVD / NIST