A global buffer overflow in OptiPNG 0.7.6 allows remote attackers to cause a denial-of-service attack or other unspecified impact with a maliciously crafted GIF format file, related to an uncontrolled loop in the LZWReadByte function of the gifread.c file.

The Linux/Unix host has one or more packages installed that are impacted by a vulnerability without a vendor supplied patch available.

  - A global buffer overflow in OptiPNG 0.7.6 allows remote attackers to cause a denial-of-service attack or     other unspecified impact with a maliciously crafted GIF format file, related to an uncontrolled loop in     the LZWReadByte function of the gifread.c file. (CVE-2017-16938)

Note that Nessus relies on the presence of the package as reported by the vendor.

Security fix for CVE-2017-1000229 and CVE-2017-16938

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.

The remote host is affected by the vulnerability described in GLSA-201801-02 (OptiPNG: Multiple vulnerabilities)

    Multiple vulnerabilities have been discovered in OptiPNG. Please review       the referenced CVE identifiers for details.
  Impact :

    A remote attacker could entice a user to process a specially crafted       image file, possibly resulting in execution of arbitrary code with the       privileges of the process or a Denial of Service condition.
  Workaround :

    There is no known workaround at this time.

This update for optipng fixes the following issues :

Security issue fixed :

  - CVE-2017-1000229: Fix integer overflow bug in function     minitiff_read_info() allows an attacker to remotely     execute code or cause denial of service (boo#1068720).

  - CVE-2017-16938: Fix a global buffer overflow that allows     attackers to cause DoS via a maliciously crafted GIF     file (bsc#1069774).

Two vulnerabilities were discovered in optipng, an advanced PNG optimizer, which may result in denial of service or the execution of arbitrary code if a malformed file is processed.

optipng, an advanced PNG (Portable Network Graphics) optimizer, has been found vulnerable to a buffer overflow which allows remote attackers to cause a denial of service attack or other unspecified impact with a maliciously crafted GIF format file, related to an uncontrolled loop in the LZWReadByte function of the gifread.c file.

For Debian 7 'Wheezy', these problems have been fixed in version 0.6.4-1+deb7u4.

We recommend that you upgrade your optipng packages.

NOTE: Tenable Network Security has extracted the preceding description block directly from the DLA security advisory. Tenable has attempted to automatically clean and format it as much as possible without introducing additional issues.

ID	Name	Product	Family	Severity
221013	Linux Distros Unpatched Vulnerability : CVE-2017-16938	Nessus	Misc.	high
105990	Fedora 27 : optipng (2017-e56a2ddd09)	Nessus	Fedora Local Security Checks	high
105628	GLSA-201801-02 : OptiPNG: Multiple vulnerabilities	Nessus	Gentoo Local Security Checks	high
105379	Fedora 26 : optipng (2017-018464cbf9)	Nessus	Fedora Local Security Checks	high
105220	openSUSE Security Update : optipng (openSUSE-2017-1320)	Nessus	SuSE Local Security Checks	high
105119	Debian DSA-4058-1 : optipng - security update	Nessus	Debian Local Security Checks	high
104938	Debian DLA-1196-1 : optipng security update	Nessus	Debian Local Security Checks	high

Detections

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CVE-2017-16938

high

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