Use After Free in Haxx Libcurl
CVE-2016-5421
Use-after-free vulnerability in libcurl before 7.50.1 allows attackers to control which connection is used or possibly have unspecified other impact via unknown vectors.
Vulnerability class: Use-After-Free
EPSS: 0.011 (78.3th percentile) — read the EPSS interpretation.
CVSS v3 metric
CVSS v3 base score 8.1 (High). Vector: CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H.
Affected products
- Haxx Libcurl
- Canonical Ubuntu_linux — versions 12.04, 14.04, 16.04
- Debian Debian_linux — versions 8.0
- Fedoraproject Fedora — versions 23, 24
- Opensuse Leap — versions 42.1
- Opensuse — versions 13.2
- N/a — versions n/a
Weakness classification (CWE)
Public proof-of-concept exploits
References
- RHSA-2018:3558 (x_refsource_REDHAT, vendor-advisory, Third Party Advisory)
- secalert@redhat.com (x_refsource_CONFIRM, Third Party Advisory)
- SSA:2016-219-01 (vendor-advisory, Third Party Advisory, x_refsource_SLACKWARE)
- 92306 (Third Party Advisory, VDB Entry, vdb-entry, x_refsource_BID)
- DSA-3638 (vendor-advisory, Third Party Advisory, x_refsource_DEBIAN)
- secalert@redhat.com (x_refsource_MISC, Mitigation, Vendor Advisory)
- openSUSE-SU-2016:2227 (vendor-advisory, Third Party Advisory, x_refsource_SUSE)
- secalert@redhat.com (x_refsource_CONFIRM, Third Party Advisory)
- openSUSE-SU-2016:2379 (vendor-advisory, Third Party Advisory, x_refsource_SUSE)
- 1036536 (Third Party Advisory, VDB Entry, vdb-entry, x_refsource_SECTRACK)
Frequently asked questions
- What is CVE-2016-5421?
- CVE-2016-5421 is a high-severity vulnerability in Haxx Libcurl, classified under Use After Free. CVSS score: 8.1/10. Published 2016-08-10.
- How severe is CVE-2016-5421?
- High severity. CVSS v3 base score is 8.1 out of 10.
- Is CVE-2016-5421 known to be exploited?
- 1 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.