ASA-2019-00149 – libssh2: Out-of-bounds reads with specially crafted SSH packets

Posted on by Allele Security Intelligence in Alerts

Allele Security Alert

ASA-2019-00149

Identifier(s)

ASA-2019-00149, CVE-2019-3861

Title

Out-of-bounds reads with specially crafted SSH packets

Vendor(s)

The libssh2 project

Product(s)

libssh2

Affected version(s)

libssh2 versions 0.15 up to and including 1.8.0

Fixed version(s)

libssh2 1.8.1

Proof of concept

Unknown

Description

A server could send a specially crafted SSH packet with a padding length value greater than the packet length. This would result in a buffer read out of bounds when decompressing the packet or result in a corrupted packet value (CWE-130).

Technical details

Unknown

Credits

Chris Coulson (Canonical Ltd)

Reference(s)

libssh2 Security Advisory: CVE-2019-3861
https://www.libssh2.org/CVE-2019-3861.html

[SECURITY ADVISORIES] libssh2
https://seclists.org/oss-sec/2019/q1/184

Security fixes (#315) · libssh2/libssh2@dc109a7
https://github.com/libssh2/libssh2/commit/dc109a7f518757741590bb993c0c8412928ccec2

Security fixes by willco007 · Pull Request #315 · libssh2/libssh2
https://github.com/libssh2/libssh2/pull/315

CVE-2019-3861 - Red Hat Customer Portal
https://access.redhat.com/security/cve/CVE-2019-3861

CVE-2019-3861
https://security-tracker.debian.org/tracker/CVE-2019-3861

CVE-2019-3861 in Ubuntu
https://people.canonical.com/~ubuntu-security/cve/CVE-2019-3861.html

CVE-2019-3861 | SUSE
https://www.suse.com/security/cve/CVE-2019-3861

CVE-2019-3861
https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2019-3861

CVE-2019-3861
https://nvd.nist.gov/vuln/detail/CVE-2019-3861

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Last modified: March 19, 2019

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