SB2017032601 - Multiple vulnerabilities in potrace.sourceforge.net potrace

Description

This security bulletin contains information about 2 vulnerabilities.

1) Out-of-bounds read (CVE-ID: CVE-2017-12067)

CWE-ID: CWE-125 - Out-of-bounds read

CVSSv4: 8.7 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N]

The vulnerability allows a remote attacker to perform a denial of service (DoS) attack.

The vulnerability exists due to heap-based buffer over-read in the interpolate_cubic function in mkbitmap.c. A remote attacker can perform a denial of service attack.

2) Input validation error (CVE-ID: CVE-2017-7263)

CWE-ID: CWE-20 - Improper input validation

CVSSv4: 8.4 [CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:A/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N]

The vulnerability allows remote attackers to perform a denial of service (DoS) attack.

The vulnerability exists due to insufficient validation of user-supplied input. A remote attacker can cause a denial of service (heap-based buffer over-read and application crash) or possibly have unspecified other impact via a crafted BMP image.

Remediation

Cybersecurity Help is not aware of any official remediation provided by the vendor.

References

• https://github.com/hackerlib/hackerlib-vul/tree/master/potrace/heap-buffer-overflow-mkbitmap
• http://www.securityfocus.com/bid/97112
• https://blogs.gentoo.org/ago/2017/03/03/potrace-heap-based-buffer-overflow-in-bm_readbody_bmp-bitmap_io-c-incomplete-fix-for-cve-2016-8698/