CVE-2016-8623: Use After Free
First published: Tue Oct 25 2016(Updated: )
A flaw was found in curl before version 7.51.0. The way curl handles cookies permits other threads to trigger a use-after-free leading to information disclosure.
Credit: secalert@redhat.com
| Affected Software | Affected Version | How to fix |
|---|---|---|
| redhat/curl | <7.51.0 | 7.51.0 |
| Curl | <7.51.0 |
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Reference Links
- http://www.oracle.com/technetwork/security-advisory/cpuoct2018-4428296.html
- http://www.securityfocus.com/bid/94106
- http://www.securitytracker.com/id/1037192
- https://access.redhat.com/errata/RHSA-2018:2486
- https://access.redhat.com/errata/RHSA-2018:3558
- https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2016-8623
- https://curl.haxx.se/CVE-2016-8623.patch
- https://curl.haxx.se/docs/adv_20161102I.html
- https://lists.apache.org/thread.html/r58af02e294bd07f487e2c64ffc0a29b837db5600e33b6e698b9d696b@%3Cissues.bookkeeper.apache.org%3E
- https://lists.apache.org/thread.html/rf4c02775860db415b4955778a131c2795223f61cb8c6a450893651e4@%3Cissues.bookkeeper.apache.org%3E
- https://security.gentoo.org/glsa/201701-47
- https://www.tenable.com/security/tns-2016-21
- https://bugzilla.redhat.com/show_bug.cgi/attachment.cgi?id=1213818&action=diff
- https://bugzilla.redhat.com/show_bug.cgi/attachment.cgi?id=1213818&action=edit
- https://bugzilla.redhat.com/show_bug.cgi/show_bug.cgi?id=1390894
- https://bugzilla.redhat.com/show_bug.cgi/show_bug.cgi?id=1390895
- https://bugzilla.redhat.com/show_bug.cgi/show_bug.cgi?id=1390896
- https://bugzilla.redhat.com/show_bug.cgi?id=1388388
- https://lists.apache.org/thread.html/rf4c02775860db415b4955778a131c2795223f61cb8c6a450893651e4%40%3Cissues.bookkeeper.apache.org%3E
- https://lists.apache.org/thread.html/r58af02e294bd07f487e2c64ffc0a29b837db5600e33b6e698b9d696b%40%3Cissues.bookkeeper.apache.org%3E
Frequently Asked Questions
What is the severity of CVE-2016-8623?
CVE-2016-8623 has been classified as a moderate severity vulnerability due to its potential for information disclosure.
How do I fix CVE-2016-8623?
To fix CVE-2016-8623, upgrade to curl version 7.51.0 or later.
What is the nature of the vulnerability in CVE-2016-8623?
CVE-2016-8623 is a use-after-free vulnerability in curl that can lead to information disclosure when handling cookies.
Which versions of curl are affected by CVE-2016-8623?
CVE-2016-8623 affects all versions of curl prior to 7.51.0.
Is CVE-2016-8623 a remote or local vulnerability?
CVE-2016-8623 is considered a local vulnerability as it requires concurrent thread access with shared cookie handles.
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