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…
Does this matter?
High impact if exploited, but EPSS currently rates exploitation as unlikely (4.75%). Schedule it in the normal patch cycle and watch for a rise in EPSS or a public exploit.
Description
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.
- CVSS 3.0
- 9.8 CRITICALCVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
- EPSS
- 4.75% probability · 92th percentile
- Public exploits
- None in Exploit-DB
- CISA KEV
- Not listed
- Weakness
- CWE-119
- Affected
- libgd/libgd
- Source
- security@debian.org
EPSS 4.7% since 27 October 2026; no change recorded yet. Points are recorded when the score first appears and whenever it moves by a percentage point or more.
References
- http://www.debian.org/security/2016/dsa-3693
- http://www.openwall.com/lists/oss-security/2016/10/15/1Third Party Advisory
- http://www.php.net/ChangeLog-5.phpRelease Notes, Vendor Advisory
- http://www.php.net/ChangeLog-7.phpRelease Notes, Vendor Advisory
- http://www.securityfocus.com/bid/93594
- https://bugs.php.net/bug.php?id=73280Vendor Advisory
- https://github.com/libgd/libgd/commit/53110871935244816bbb9d131da0bccff734bfe9Vendor Advisory
- https://support.f5.com/csp/article/K21336065?utm_source=f5support&%3Butm_medium=RSS
- http://www.debian.org/security/2016/dsa-3693
- http://www.openwall.com/lists/oss-security/2016/10/15/1Third Party Advisory
- http://www.php.net/ChangeLog-5.phpRelease Notes, Vendor Advisory
- http://www.php.net/ChangeLog-7.phpRelease Notes, Vendor Advisory
- http://www.securityfocus.com/bid/93594
- https://bugs.php.net/bug.php?id=73280Vendor Advisory
- https://github.com/libgd/libgd/commit/53110871935244816bbb9d131da0bccff734bfe9Vendor Advisory
- https://support.f5.com/csp/article/K21336065?utm_source=f5support&%3Butm_medium=RSS
Source: NVD record, EPSS from FIRST.org, KEV from CISA, exploits from Exploit-DB. Refreshed daily. Download this record as JSON.