CVE-2016-8618
The libcurl API function called `curl_maprintf()` before version 7.51.0 can be tricked into doing a double-free due to an unsafe `size_t` multiplication, on systems using 32 bit `size_t` variables.
02 Description
The libcurl API function called `curl_maprintf()` before version 7.51.0 can be tricked into doing a double-free due to an unsafe `size_t` multiplication, on systems using 32 bit `size_t` variables.
03 Exploitation and scoring
- Exploitation
- Not assessed. CISA has not published an exploitation assessment for this record, and it is not in the KEV catalog. That is an absence of assessment, not a finding of no risk.
- SSVC decision
- Not assessed by CISA
- EPSS probability
- 4.57% probability of exploitation activity in the next 30 days.
- EPSS percentile
- Equal to or higher than the score of 91.5% of scored records. A rank, not a probability.
- NVD base score
- 9.8 (CVSS v3.x), scored by the NVD independently of the CNA.
- NVD CVSS vector
- CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
- NVD analysis status
- Modified. NVD last modified this record on 2026-06-17.
- Red Hat severity
- Moderate. Red Hat's rating for its own products, not a CVSS rating.
Exploit-prediction scores from FIRST. Independent scoring and analysis status from the NVD. Vendor severity from Red Hat. Exploitation assessment and catalog membership from CISA.
04 Metadata
- Published
- 2018-07-31 21:00Z8 YR AGO
- Last updated
- 2024-08-06 02:27Z2 YR AGO
- Reserved
- 2016-10-12
- Assigning CNA
- redhat
- Record state
- PUBLISHED
- Severity
- Medium (CVSS 5.3)
- CNA CVSS vector
- CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N
- Weaknesses
- Data version
- 5.1
- Document digest
- 0a3fd59c7bcf961af145dcf84608998a6fb9a611846d2806998810d83b5beb73
05 Affected products
06 References
- access.redhat.comRHSA-2018:3558https://access.redhat.com/errata/RHSA-2018:3558
- bugzilla.redhat.comhttps://bugzilla.redhat.com/show_bug.cgi?id=CVE-2016-8618
- www.tenable.comhttps://www.tenable.com/security/tns-2016-21
- www.securitytracker.com1037192http://www.securitytracker.com/id/1037192
- www.oracle.comhttp://www.oracle.com/technetwork/security-advisory/cpuoct2018-4428296.html
- curl.haxx.sehttps://curl.haxx.se/docs/adv_20161102D.html
- access.redhat.comRHSA-2018:2486https://access.redhat.com/errata/RHSA-2018:2486
- security.gentoo.orgGLSA-201701-47https://security.gentoo.org/glsa/201701-47
- www.securityfocus.com94098http://www.securityfocus.com/bid/94098
07 Fixed in
Arch Linux
- lib32-curl Fixed in 7.51.0-1
- lib32-libcurl-compat Fixed in 7.51.0-1
- lib32-libcurl-gnutls Fixed in 7.51.0-1
Source: Arch Linux Security Tracker, the Arch Linux security team. Reformatted by exploit.cc.
Debian 12
- curl Fixed in 7.51.0-1
Source: Debian Security Tracker, the Debian security team. Received through OSV.dev. Reformatted by exploit.cc.
Debian 13
- curl Fixed in 7.51.0-1
Source: Debian Security Tracker, the Debian security team. Received through OSV.dev. Reformatted by exploit.cc.
Debian 14
- curl Fixed in 7.51.0-1
Source: Debian Security Tracker, the Debian security team. Received through OSV.dev. Reformatted by exploit.cc.
Ubuntu 14.04 LTS
- curl Fixed in 7.35.0-1ubuntu2.10
Source: Ubuntu, Canonical Ltd. Licensed under CC BY-SA 4.0. Received through OSV.dev. Reformatted by exploit.cc.
Ubuntu 16.04 LTS
- curl Fixed in 7.47.0-1ubuntu2.2
Source: Ubuntu, Canonical Ltd. Licensed under CC BY-SA 4.0. Received through OSV.dev. Reformatted by exploit.cc.
A release or ecosystem missing from this list has no record here. It may be unaffected or not covered by the source. Source notices and licences.