Fedora 27 : libgit2 (2018-ca483ae3e0)

high Nessus Plugin ID 111990

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Synopsis

The remote Fedora host is missing a security update.

Description

This is a security release fixing out-of-bounds reads when processing smart-protocol 'ng' packets.

When parsing an 'ng' packet, we keep track of both the current position as well as the remaining length of the packet itself. But instead of taking care not to exceed the length, we pass the current pointer's position to strchr, which will search for a certain character until hitting NUL. It is thus possible to create a crafted packet which doesn't contain a NUL byte to trigger an out-of-bounds read.

The issue was discovered by the oss-fuzz project, issue 9406.

Note that Tenable Network Security has extracted the preceding description block directly from the Fedora update system website.
Tenable has attempted to automatically clean and format it as much as possible without introducing additional issues.

Solution

Update the affected libgit2 package.

See Also

https://bodhi.fedoraproject.org/updates/FEDORA-2018-ca483ae3e0

Plugin Details

Severity: High

ID: 111990

File Name: fedora_2018-ca483ae3e0.nasl

Version: 1.4

Type: local

Agent: unix

Published: 8/20/2018

Updated: 1/6/2021

Supported Sensors: Frictionless Assessment Agent, Nessus Agent, Agentless Assessment, Nessus

Vulnerability Information

CPE: p-cpe:/a:fedoraproject:fedora:libgit2, cpe:/o:fedoraproject:fedora:27

Required KB Items: Host/local_checks_enabled, Host/RedHat/release, Host/RedHat/rpm-list

Patch Publication Date: 8/19/2018

Vulnerability Publication Date: 8/19/2018

Reference Information