CVE-2016-2191 — MEDIUM (6.5)

Vulnerability Description

The bmp_read_rows function in pngxtern/pngxrbmp.c in OptiPNG before 0.7.6 allows remote attackers to cause a denial of service (invalid memory write and crash) via a series of delta escapes in a crafted BMP image.

CVSS Score

6.5

MEDIUM

CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H

Attack Vector

NETWORK

Attack Complexity

LOW

Privileges Required

NONE

User Interaction

REQUIRED

Scope

UNCHANGED

Confidentiality

NONE

Integrity

NONE

Availability

HIGH

Affected Products

Vendor	Product	Versions
Optipng	Optipng	0.7.2
Canonical	Ubuntu Linux	12.04
Debian	Debian Linux	7.0
Opensuse	Leap	42.1
Opensuse	Opensuse	13.2

Related Weaknesses (CWE)

CWE-119

References

http://lists.opensuse.org/opensuse-updates/2016-04/msg00061.htmlThird Party Advisory
http://lists.opensuse.org/opensuse-updates/2016-04/msg00065.htmlThird Party Advisory
http://packetstormsecurity.com/files/136553/Optipng-Invalid-Write.htmlExploit
http://seclists.org/fulldisclosure/2016/Apr/15Third Party Advisory
http://www.debian.org/security/2016/dsa-3546Third Party Advisory
http://www.openwall.com/lists/oss-security/2016/04/04/2Third Party Advisory
http://www.securityfocus.com/archive/1/537972/100/0/threaded
http://www.ubuntu.com/usn/USN-2951-1Third Party Advisory
https://security.gentoo.org/glsa/201608-01
https://sourceforge.net/p/optipng/bugs/59/Patch
http://lists.opensuse.org/opensuse-updates/2016-04/msg00061.htmlThird Party Advisory
http://lists.opensuse.org/opensuse-updates/2016-04/msg00065.htmlThird Party Advisory
http://packetstormsecurity.com/files/136553/Optipng-Invalid-Write.htmlExploit
http://seclists.org/fulldisclosure/2016/Apr/15Third Party Advisory
http://www.debian.org/security/2016/dsa-3546Third Party Advisory

FAQ

What is CVE-2016-2191?

CVE-2016-2191 is a vulnerability with a CVSS score of 6.5 (MEDIUM). The bmp_read_rows function in pngxtern/pngxrbmp.c in OptiPNG before 0.7.6 allows remote attackers to cause a denial of service (invalid memory write and crash) via a series of delta escapes in a craft...

How severe is CVE-2016-2191?

CVE-2016-2191 has been rated MEDIUM with a CVSS base score of 6.5/10. Review the CVSS metrics above for detailed severity breakdown.

Is there a patch for CVE-2016-2191?

Check the references section above for vendor advisories and patch information. Affected products include: Optipng Optipng, Canonical Ubuntu Linux, Debian Debian Linux, Opensuse Leap, Opensuse Opensuse.