Vulnerability in Libpng
CVE-2015-8540
Integer underflow in the png_check_keyword function in pngwutil.c in libpng 0.90 through 0.99, 1.0.x before 1.0.66, 1.1.x and 1.2.x before 1.2.56, 1.3.x and 1.4.x before 1.4.19, and 1.5.x before 1.5.26 allows remote attackers to have unspecified impact via a space character as a keyword in a PNG image, which triggers an out-of-bounds read.
Published · last modified .
CVSS v3 metric
CVSS v3 base score 8.8 (High). Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H.
EPSS exploit prediction
EPSS: 0.065 (93.7th percentile), scored .
Low probability of exploitation in the next 30 days, but still tracked. 94th percentile — 93.7% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.065 · newest: 0.065 · change: 0.000
Affected products
- Libpng — versions 1.2.0, 1.2.1, 1.2.2
- Debian Linux — versions 6.0
- Fedoraproject Fedora — versions 23
- Red Hat Enterprise Linux Desktop Supplementary — versions 5.0, 6.0
- Red Hat Enterprise Linux Hpc Node — versions 6.0
- Red Hat Enterprise Linux Server Supplementary — versions 5.0, 6.0
- Red Hat Enterprise Linux Workstation Supplementary — versions 6.0
Weakness classification (CWE)
Public proof-of-concept exploits
References
- sourceforge.net/projects/libpng/files/libpng10/1.0.66/ (Patch)
- security.gentoo.org/glsa/201611-08 (vendor-advisory)
- www.openwall.com/lists/oss-security/2015/12/11/2 (mailing-list)
- sourceforge.net/p/libpng/code/ci/d9006f683c641793252d92254a75ae9b815b42ed/
- sourceforge.net/projects/libpng/files/libpng15/1.5.26/ (Patch)
- access.redhat.com/errata/RHSA-2016:1430 (vendor-advisory)
- www.openwall.com/lists/oss-security/2015/12/10/6 (mailing-list)
- www.oracle.com/technetwork/topics/security/bulletinjul2016-3090568.html
- sourceforge.net/projects/libpng/files/libpng14/1.4.19/ (Patch)
- www.openwall.com/lists/oss-security/2015/12/11/1 (mailing-list)
Frequently asked questions
- What is CVE-2015-8540?
- CVE-2015-8540 is a high-severity vulnerability in Libpng, classified under CWE-189. CVSS score: 8.8/10. Published 2016-04-14.
- How severe is CVE-2015-8540?
- High severity. CVSS v3 base score is 8.8 out of 10.
- Is CVE-2015-8540 known to be exploited?
- 2 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.