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 crash) or possibly have unspecified other impact via…
Does this matter?
High impact if exploited, but EPSS currently rates exploitation as unlikely (8.52%). Schedule it in the normal patch cycle and watch for a rise in EPSS or a public exploit.
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 crash) or possibly have unspecified other impact via vectors involving long user and password fields.
- CVSS 3.1
- 9.8 CRITICALCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
- EPSS
- 8.52% probability · 95th percentile
- Public exploits
- None in Exploit-DB
- CISA KEV
- Not listed
- Weakness
- CWE-190
- Affected
- haxx/curl · haxx/libcurl · debian/debian linux
- Source
- security@debian.org
EPSS 8.5% since 27 October 2026; no change recorded yet. The dashed line is the ten per cent mark our analysts treat as “patch before the next change window”. Points are recorded when the score first appears and whenever it moves by a percentage point or more.
References
- http://security.cucumberlinux.com/security/details.php?id=161Third Party Advisory
- http://www.securityfocus.com/bid/101998Third Party Advisory, VDB Entry
- http://www.securitytracker.com/id/1039896Third Party Advisory, VDB Entry
- http://www.securitytracker.com/id/1040608
- https://access.redhat.com/errata/RHSA-2018:3558
- https://curl.haxx.se/docs/adv_2017-12e7.htmlMitigation, Vendor Advisory
- https://security.gentoo.org/glsa/201712-04Third Party Advisory
- https://www.debian.org/security/2017/dsa-4051Third Party Advisory
- http://security.cucumberlinux.com/security/details.php?id=161Third Party Advisory
- http://www.securityfocus.com/bid/101998Third Party Advisory, VDB Entry
- http://www.securitytracker.com/id/1039896Third Party Advisory, VDB Entry
- http://www.securitytracker.com/id/1040608
- https://access.redhat.com/errata/RHSA-2018:3558
- https://curl.haxx.se/docs/adv_2017-12e7.htmlMitigation, Vendor Advisory
- https://security.gentoo.org/glsa/201712-04Third Party Advisory
- https://www.debian.org/security/2017/dsa-4051Third Party Advisory
Source: NVD record, EPSS from FIRST.org, KEV from CISA, exploits from Exploit-DB. Refreshed daily. Download this record as JSON.