PT-2020-6258 · Libssh+9 · Libssh+9

Published 2020-07-29 · Updated 2024-06-15 · CVE-2020-16135

Positive Technologies (AI Summary)

CVSS v2.0

7.1

High

Base vector

AV:N/AC:M/Au:N/C:N/I:N/A:C

Name of the Vulnerable Software and Affected Versions libssh version 0.9.4

Description The issue is related to a NULL pointer dereference in the tftpserver.c component of the libssh library, which can occur if ssh buffer new returns NULL. This can potentially allow a remote attacker to cause a denial of service.

Recommendations For libssh version 0.9.4, at the moment, there is no information about a newer version that contains a fix for this vulnerability.

Exploit

NULL Pointer Dereference

Weakness Enumeration

CWE-476

Related Identifiers

ALSA-2021:4387

ALT-PU-2021-1788

ALT-PU-2021-2381

ALT-PU-2021-3669

BDU:2021-03730

CESA-2021_4387

CVE-2020-16135

DLA-2303-1

MGASA-2020-0324

MGASA-2020-0338

OPENSUSE-SU-2024:10998-1

RHSA-2021:4387

RHSA-2021:4750

RHSA-2021_4387

RLSA-2021:4387

SUSE-SU-2024:0525-1

SUSE-SU-2024:0539-1

USN-4447-1

Affected Products

Alt Linux

Almalinux

Astra Linux

Centos

Linuxmint

Red Hat

Rocky Linux

Suse

Ubuntu

Libssh

References · 74

• 🔥 https://bugs.libssh.org/rLIBSSHe631ebb3e2247dd25e9678e6827c20dc73b73238 · Exploit
• https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/JNW5GBC6JFN76VEWQXMLT5F7VCZ5AJ2E · Vendor Advisory
• https://osv.dev/vulnerability/SUSE-SU-2024:0525-1 · Vendor Advisory
• https://security.gentoo.org/glsa/202011-05 · Vendor Advisory
• https://osv.dev/vulnerability/ALSA-2021:4387 · Vendor Advisory
• https://wiki.astralinux.ru/astra-linux-se81-bulletin-20211019SE81 · Vendor Advisory
• https://ubuntu.com/security/CVE-2020-16135 · Vendor Advisory
• https://wiki.astralinux.ru/astra-linux-se16-bulletin-20210730SE16 · Vendor Advisory
• https://nvd.nist.gov/vuln/detail/CVE-2020-16135 · Security Note
• https://security-tracker.debian.org/tracker/CVE-2020-16135 · Vendor Advisory
• https://bugs.libssh.org/T232 · Vendor Advisory
• https://wiki.astralinux.ru/astra-linux-se47-bulletin-2022-0926SE47 · Vendor Advisory
• https://cve.org/CVERecord?id=CVE-2020-16135 · Security Note
• https://wiki.astralinux.ru/astra-linux-se16-bulletin-20210611SE16 · Vendor Advisory
• https://oracle.com/security-alerts/cpuapr2022.html · Patch