CVE-2020-16135: libssh 0.9.4 has a NULL pointer dereference in tftpserver.c if ssh_buffer_new returns NULL

Medium severity · published Jul 29, 2020

CVE-2020-16135

libssh 0.9.4 has a NULL pointer dereference in tftpserver.c if ssh_buffer_new returns NULL

5.9

CVSS

4.1%

EPSS

On KEV

Description

libssh 0.9.4 has a NULL pointer dereference in tftpserver.c if ssh_buffer_new returns NULL.

CVSS vector

CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H

Attack vector

Network

Complexity

High

Privileges

None

User interaction

None

Confidentiality

None

Integrity

None

Availability

High

Scope

Unchanged

Exploitation

Is it being used?

Exploit prediction (EPSS)4.1% · higher than 91% of CVEs

Exploited in the wildNo evidence yet

CISA KEVNot listed

Ransomware campaign useNot known

Affected products

Which versions

Communications Cloud Native Core Policy · Oracle

1.15.0 · source: NVD

Debian Linux · Debian

9.0 · source: NVD

Fedora · Fedoraproject

32; 33 · source: NVD

Libssh · Libssh

0.9.4 · source: NVD

Ubuntu Linux · Canonical

16.04; 18.04; 20.04 · source: NVD

Affected product

Ubuntu Linux

Canonical

All Ubuntu Linux CVEs

References

NVD

https://nvd.nist.gov/vuln/detail/CVE-2020-16135

CVE.org

https://www.cve.org/CVERecord?id=CVE-2020-16135

Issue Tracking

https://bugs.libssh.org/T232

Exploit

https://bugs.libssh.org/rLIBSSHe631ebb3e2247dd25e9678e6827c20dc73b73238

Third Party Advisory

https://gitlab.com/libssh/libssh-mirror/-/merge_requests/120

Mailing List

https://lists.debian.org/debian-lts-announce/2020/07/msg00034.html

lists.fedoraproject.org

https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/FCIKQRKXAAB4HMWM62EPZJ4DVBHIIEG6/

lists.fedoraproject.org

https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/JNW5GBC6JFN76VEWQXMLT5F7VCZ5AJ2E/