ASA-2019-00148 – libssh2: Out-of-bounds reads with specially crafted SFTP packets

Posted on by Allele Security Intelligence in Alerts

Allele Security Alert

ASA-2019-00148

Identifier(s)

ASA-2019-00148, CVE-2019-3860

Title

Out-of-bounds reads with specially crafted SFTP packets

Vendor(s)

The libssh2 project

Product(s)

libssh2

Affected version(s)

libssh2 versions 0.3 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 partial SFTP packet with a empty payload in response to various SFTP commands such as read directory, file status, status vfs and symlink. The result would be a memory out of bounds read (CWE-130).

Technical details

Unknown

Credits

Chris Coulson (Canonical Ltd)

Reference(s)

libssh2 Security Advisory: CVE-2019-3860
https://www.libssh2.org/CVE-2019-3860.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-2019-3860 - Red Hat Customer Portal
https://access.redhat.com/security/cve/CVE-2019-3860

CVE-2019-3860
https://security-tracker.debian.org/tracker/CVE-2019-3860

CVE-2019-3860 in Ubuntu
https://people.canonical.com/~ubuntu-security/cve/CVE-2019-3860.html

CVE-2019-3860 | SUSE
https://www.suse.com/security/cve/CVE-2019-3860

CVE-2019-3860
https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2019-3860

CVE-2019-3860
https://nvd.nist.gov/vuln/detail/CVE-2019-3860

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Last modified: March 19, 2019

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