RHEL 6 : libpng (RHSA-2011:1105)

medium Nessus プラグイン ID 55727
New! プラグインの深刻度には CVSS v3 が適用されるようになりました。

プラグインの深刻度は、デフォルトで CVSS v3 を使って計算されるように更新されました。プラグインに CVSS v3 スコアがない場合には、CVSS v2 を使って深刻度が計算されます。深刻度の表示設定は、[設定]のドロップダウンで切り替えができます。

概要

The remote Red Hat host is missing one or more security updates.

説明

Updated libpng packages that fix multiple security issues are now available for Red Hat Enterprise Linux 6.

The Red Hat Security Response Team has rated this update as having moderate security impact. Common Vulnerability Scoring System (CVSS) base scores, which give detailed severity ratings, are available for each vulnerability from the CVE links in the References section.

The libpng packages contain a library of functions for creating and manipulating PNG (Portable Network Graphics) image format files.

A buffer overflow flaw was found in the way libpng processed certain PNG image files. An attacker could create a specially crafted PNG image that, when opened, could cause an application using libpng to crash or, potentially, execute arbitrary code with the privileges of the user running the application. (CVE-2011-2690)

Note: The application behavior required to exploit CVE-2011-2690 is rarely used. No application shipped with Red Hat Enterprise Linux behaves this way, for example.

An out-of-bounds memory read flaw was found in the way libpng processed certain PNG image files. An attacker could create a specially crafted PNG image that, when opened, could cause an application using libpng to crash. (CVE-2011-2501)

An uninitialized memory read issue was found in the way libpng processed certain PNG images that use the Physical Scale (sCAL) extension. An attacker could create a specially crafted PNG image that, when opened, could cause an application using libpng to crash.
(CVE-2011-2692)

Users of libpng should upgrade to these updated packages, which upgrade libpng to version 1.2.46 to correct these issues. All running applications using libpng must be restarted for the update to take effect.

ソリューション

Update the affected packages.

関連情報

https://access.redhat.com/security/cve/cve-2011-2501

https://access.redhat.com/security/cve/cve-2011-2690

https://access.redhat.com/security/cve/cve-2011-2692

https://access.redhat.com/errata/RHSA-2011:1105

プラグインの詳細

深刻度: Medium

ID: 55727

ファイル名: redhat-RHSA-2011-1105.nasl

バージョン: 1.18

タイプ: local

エージェント: unix

公開日: 2011/7/29

更新日: 2021/1/14

依存関係: ssh_get_info.nasl

リスク情報

VPR

リスクファクター: Medium

スコア: 5.9

CVSS v2

リスクファクター: Medium

Base Score: 6.8

Temporal Score: 5

ベクトル: AV:N/AC:M/Au:N/C:P/I:P/A:P

現状ベクトル: E:U/RL:OF/RC:C

脆弱性情報

CPE: p-cpe:/a:redhat:enterprise_linux:libpng, p-cpe:/a:redhat:enterprise_linux:libpng-debuginfo, p-cpe:/a:redhat:enterprise_linux:libpng-devel, p-cpe:/a:redhat:enterprise_linux:libpng-static, cpe:/o:redhat:enterprise_linux:6, cpe:/o:redhat:enterprise_linux:6.1

必要な KB アイテム: Host/local_checks_enabled, Host/RedHat/release, Host/RedHat/rpm-list, Host/cpu

エクスプロイトの容易さ: No known exploits are available

パッチ公開日: 2011/7/28

脆弱性公開日: 2011/7/17

参照情報

CVE: CVE-2011-2501, CVE-2011-2690, CVE-2011-2692

BID: 48474, 48660

RHSA: 2011:1105