CVE-2016-7167

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Summary

CVECVE-2016-7167
StatePUBLISHED
Assignermitre
Source PriorityCVE Program / NVD first with legacy fallback
Published2016-10-07 14:59:08 UTC
Updated2026-05-06 22:30:45 UTC
DescriptionMultiple integer overflows in the (1) curl_escape, (2) curl_easy_escape, (3) curl_unescape, and (4) curl_easy_unescape functions in libcurl before 7.50.3 allow attackers to have unspecified impact via a string of length 0xffffffff, which triggers a heap-based buffer overflow.

Risk And Classification

Primary CVSS: v3.0 9.8 CRITICAL from [email protected]

CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

EPSS: 0.022570000 probability, percentile 0.847080000 (date 2026-05-07)

Problem Types: CWE-190 | n/a

VersionSourceTypeScoreSeverityVector
3.0[email protected]Primary9.8CRITICALCVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
2.0[email protected]Primary7.5AV:N/AC:L/Au:N/C:P/I:P/A:P

CVSS v3.0 Breakdown

Attack Vector
Network
Attack Complexity
Low
Privileges Required
None
User Interaction
None
Scope
Unchanged
Confidentiality
High
Integrity
High
Availability
High

CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

CVSS v2.0 Breakdown

Access Vector
Network
Access Complexity
Low
Authentication
None
Confidentiality
Partial
Integrity
Partial
Availability
Partial

AV:N/AC:L/Au:N/C:P/I:P/A:P

NVD Known Affected Configurations (CPE 2.3)

TypeVendorProductVersionUpdateEditionLanguage
Operating System Fedoraproject Fedora 23 All All All
Operating System Fedoraproject Fedora 24 All All All
Operating System Fedoraproject Fedora 25 All All All
Application Haxx Libcurl All All All All

Vendor Declared Affected Products

SourceVendorProductVersionPlatforms
CNA Na N/a affected n/a Not specified

References

ReferenceSourceLinkTags
CPU Oct 2018 af854a3a-2127-422b-91ae-364da2661108 www.oracle.com
[SECURITY] [DLA 1568-1] curl security update af854a3a-2127-422b-91ae-364da2661108 lists.debian.org
Red Hat Customer Portal af854a3a-2127-422b-91ae-364da2661108 access.redhat.com
[SECURITY] Fedora 24 Update: curl-7.47.1-8.fc24 - package-announce - Fedora Mailing-Lists af854a3a-2127-422b-91ae-364da2661108 lists.fedoraproject.org
Red Hat Customer Portal af854a3a-2127-422b-91ae-364da2661108 access.redhat.com
Red Hat Customer Portal af854a3a-2127-422b-91ae-364da2661108 access.redhat.com
curl - curl escape and unescape integer overflows af854a3a-2127-422b-91ae-364da2661108 curl.haxx.se Vendor Advisory
curl/libcURL CVE-2016-7167 Multiple Integer Overflow Vulnerabilities af854a3a-2127-422b-91ae-364da2661108 www.securityfocus.com Broken Link
libcurl Integer Overflow in Escape Functions May Let Users Execute Arbitrary Code on the Target System - SecurityTracker af854a3a-2127-422b-91ae-364da2661108 www.securitytracker.com Third Party Advisory, VDB Entry
[SECURITY] Fedora 25 Update: curl-7.50.3-1.fc25 - package-announce - Fedora Mailing-Lists af854a3a-2127-422b-91ae-364da2661108 lists.fedoraproject.org
[SECURITY] Fedora 23 Update: curl-7.43.0-10.fc23 - package-announce - Fedora Mailing-Lists af854a3a-2127-422b-91ae-364da2661108 lists.fedoraproject.org
cURL: Multiple vulnerabilities (GLSA 201701-47) — Gentoo security af854a3a-2127-422b-91ae-364da2661108 security.gentoo.org
The Slackware Linux Project: Slackware Security Advisories af854a3a-2127-422b-91ae-364da2661108 www.slackware.com Third Party Advisory
[SECURITY] Fedora 25 Update: curl-7.50.3-1.fc25 - package-announce - Fedora Mailing-Lists MITRE lists.fedoraproject.org
[SECURITY] Fedora 24 Update: curl-7.47.1-8.fc24 - package-announce - Fedora Mailing-Lists MITRE lists.fedoraproject.org
[SECURITY] Fedora 23 Update: curl-7.43.0-10.fc23 - package-announce - Fedora Mailing-Lists MITRE lists.fedoraproject.org
CVE Program record CVE.ORG www.cve.org canonical
NVD vulnerability detail NVD nvd.nist.gov canonical, analysis

Legacy QID Mappings

  • 500113 Alpine Linux Security Update for curl
  • 503768 Alpine Linux Security Update for curl
  • 710385 Gentoo Linux cURL Multiple Vulnerabilities (GLSA 201701-47)

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