CVE-2020-16135
MEDIUMCVSS 5.9/10EPSS 4.11%
Last modified
CVE-2020-16135 is a medium-severity vulnerability rated 5.9/10 on the CVSS scale. libssh 0.9.4 has a NULL pointer dereference in tftpserver.c if ssh_buffer_new returns NULL.. EPSS estimates a 4.11% chance of exploitation in the next 30 days.
Description
libssh 0.9.4 has a NULL pointer dereference in tftpserver.c if ssh_buffer_new returns NULL.
Metrics
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H
Weakness Enumeration
Affected Software
| Vendor | Product | Versions |
|---|---|---|
| Libssh | Libssh | 0.9.4 |
| Debian | Debian Linux | 9.0 |
| Fedoraproject | Fedora | 32 |
| Fedoraproject | Fedora | 33 |
| Canonical | Ubuntu Linux | 16.04 |
| Canonical | Ubuntu Linux | 18.04 |
| Canonical | Ubuntu Linux | 20.04 |
| Oracle | Communications Cloud Native Core Policy | 1.15.0 |
References
- https://bugs.libssh.org/T232Issue Tracking, Vendor Advisory
- https://bugs.libssh.org/rLIBSSHe631ebb3e2247dd25e9678e6827c20dc73b73238Exploit, Issue Tracking, Vendor Advisory
- https://gitlab.com/libssh/libssh-mirror/-/merge_requests/120Third Party Advisory
- https://lists.debian.org/debian-lts-announce/2020/07/msg00034.htmlMailing List, Third Party Advisory
- https://security.gentoo.org/glsa/202011-05Third Party Advisory
- https://usn.ubuntu.com/4447-1/Third Party Advisory
- https://www.oracle.com/security-alerts/cpuapr2022.htmlPatch, Third Party Advisory
- https://bugs.libssh.org/T232Issue Tracking, Vendor Advisory
- https://bugs.libssh.org/rLIBSSHe631ebb3e2247dd25e9678e6827c20dc73b73238Exploit, Issue Tracking, Vendor Advisory
- https://gitlab.com/libssh/libssh-mirror/-/merge_requests/120Third Party Advisory
- https://lists.debian.org/debian-lts-announce/2020/07/msg00034.htmlMailing List, Third Party Advisory
- https://security.gentoo.org/glsa/202011-05Third Party Advisory
- https://usn.ubuntu.com/4447-1/Third Party Advisory
- https://www.oracle.com/security-alerts/cpuapr2022.htmlPatch, Third Party Advisory
Timeline
- Published
- Last Modified
- Status
- Modified
Frequently Asked Questions
What is CVE-2020-16135?
libssh 0.9.4 has a NULL pointer dereference in tftpserver.c if ssh_buffer_new returns NULL.
How severe is CVE-2020-16135?
CVE-2020-16135 has a CVSS score of 5.9/10 (MEDIUM severity). The EPSS model estimates a 4.11% probability of exploitation in the next 30 days.
How do I fix CVE-2020-16135?
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.
Related CVEs from 2020
- CVE-2020-16127An Ubuntu-specific modification to AccountsService in versio…5.5
- CVE-2020-16128The aptdaemon DBus interface disclosed file existence disclo…3.8
- CVE-2020-1613A vulnerability in the BGP FlowSpec implementation may cause…7.5
- CVE-2020-16131Tiki before 21.2 allows XSS because [\s\/"\'] is not properl…6.1
- CVE-2020-16132Rejected reason: DO NOT USE THIS CANDIDATE NUMBER. ConsultID…
- CVE-2020-16134An issue was discovered on Swisscom Internet Box 2, Internet…8
- CVE-2020-16136In tgstation-server 4.4.0 and 4.4.1, an authenticated user w…7.7
- CVE-2020-16137A privilege escalation issue in Cisco Unified IP Conference …9.8
- CVE-2020-16138A denial-of-service issue in Cisco Unified IP Conference Sta…7.5
- CVE-2020-16139A denial-of-service in Cisco Unified IP Conference Station 7…7.5
- CVE-2020-1614A Use of Hard-coded Credentials vulnerability exists in the …10
- CVE-2020-16140The search functionality of the Greenmart theme 2.4.2 for Wo…6.1
Are you affected by CVE-2020-16135?
Run a free Strix scan to check your systems for this vulnerability.
Scan your code nowSource: NVD / NIST