CVE-2017-8816
The NTLM authentication feature in curl and libcurl before 7.57.0 on 32-bit platforms allows attackers to cause a denial of service (integer overflow and resultant buffer overflow, and application
02 Description
The NTLM authentication feature in curl and libcurl before 7.57.0 on 32-bit platforms allows attackers to cause a denial of service (integer overflow and resultant buffer overflow, and application
03 Exploitation and scoring
- Exploitation
- Assessed, none found. CISA's assessment recorded neither public exploit code nor evidence of exploitation when it was made.
- SSVC decision
- ExploitationnoneCISA recorded no public exploit code and no evidence of exploitation.
- AutomatableyesAn attacker can reliably automate reconnaissance through exploitation, so this scales.
- Technical ImpacttotalSuccessful exploitation gives total control of the vulnerable component.
- EPSS probability
- 8.52% probability of exploitation activity in the next 30 days.
- EPSS percentile
- Equal to or higher than the score of 94.7% 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
- 2017-11-29 18:00Z8 YR AGO
- Last updated
- 2026-04-15 21:01Z6 MO AGO
- Reserved
- 2017-05-07
- Assigning CNA
- debian
- Record state
- PUBLISHED
- Severity
- Critical (CVSS 9.8)
- CNA CVSS vector
- CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
- Weaknesses
- CWE-190Integer Overflow or WraparoundBase
- Data version
- 5.2
- Document digest
- a41f43f3b55103d06771ac85756771fb12bd489b9f32880be88b1be7f6522241
05 Affected products
06 References
- security.cucumberlinux.comhttp://security.cucumberlinux.com/security/details.php?id=161
- security.gentoo.orgGLSA-201712-04https://security.gentoo.org/glsa/201712-04
- access.redhat.comRHSA-2018:3558https://access.redhat.com/errata/RHSA-2018:3558
- curl.haxx.sehttps://curl.haxx.se/docs/adv_2017-12e7.html
- www.securityfocus.com101998http://www.securityfocus.com/bid/101998
- www.securitytracker.com1039896http://www.securitytracker.com/id/1039896
- www.debian.orgDSA-4051https://www.debian.org/security/2017/dsa-4051
- www.securitytracker.com1040608http://www.securitytracker.com/id/1040608
07 Fixed in
Arch Linux
- curl Not affected
- lib32-curl Fixed in 7.57.0-1
- lib32-libcurl-compat Fixed in 7.57.0-1
- lib32-libcurl-gnutls Fixed in 7.57.0-1
- libcurl-compat Not affected
- libcurl-gnutls Not affected
Source: Arch Linux Security Tracker, the Arch Linux security team. Reformatted by exploit.cc.
Debian 12
- curl Fixed in 7.57.0-1
Source: Debian Security Tracker, the Debian security team. Received through OSV.dev. Reformatted by exploit.cc.
Debian 13
- curl Fixed in 7.57.0-1
Source: Debian Security Tracker, the Debian security team. Received through OSV.dev. Reformatted by exploit.cc.
Debian 14
- curl Fixed in 7.57.0-1
Source: Debian Security Tracker, the Debian security team. Received through OSV.dev. Reformatted by exploit.cc.
Ubuntu 16.04 LTS
- curl Fixed in 7.47.0-1ubuntu2.5
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.