Buffer overflow in Libgd
CVE-2016-8670
Integer signedness error in the dynamicGetbuf function in gd_io_dp.c in the GD Graphics Library (aka libgd) through 2.2.3, as used in PHP before 5.6.28 and 7.x before 7.0.13, allows remote attackers to cause a denial of service (stack-based buffer overflow) or possibly have unspecified other impact via a crafted imagecreatefromstring call.
Vulnerability class: Buffer Overflow
EPSS: 0.048 (91.0th percentile) — read the EPSS interpretation.
CVSS v3 metric
CVSS v3 base score 9.8 (Critical). Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H.
Affected products
Weakness classification (CWE)
References
- security@debian.org (x_refsource_CONFIRM, Release Notes, Vendor Advisory)
- security@debian.org (vdb-entry, x_refsource_BID)
- security@debian.org (x_refsource_CONFIRM, Vendor Advisory)
- security@debian.org (mailing-list, x_refsource_MLIST, Third Party Advisory)
- security@debian.org (vendor-advisory, x_refsource_DEBIAN)
- security@debian.org (x_refsource_CONFIRM, Vendor Advisory)
- security@debian.org (x_refsource_CONFIRM, Release Notes, Vendor Advisory)
- security@debian.org (x_refsource_CONFIRM)
Frequently asked questions
- What is CVE-2016-8670?
- CVE-2016-8670 is a critical-severity vulnerability in Libgd, classified under Improper Restriction of Operations within the Bounds of a Memory Buffer. CVSS score: 9.8/10. Published 2017-01-04.
- How severe is CVE-2016-8670?
- Critical severity. CVSS v3 base score is 9.8 out of 10.