Description (CNA)
The URL percent-encoding decode function in libcurl before 7.51.0 is called `curl_easy_unescape`. Internally, even if this function would be made to allocate a unscape destination buffer larger than 2GB, it would return that new length in a signed 32 bit integer variable, thus the length would get either just truncated or both truncated and turned negative. That could then lead to libcurl writing outside of its heap based buffer.
Affected (CNA)
| Vendor / product | Versions |
|---|---|
| The Curl Project / curl | affected 7.51.0 |
CWE
CWE-190, CWE-122
References
- https://access.redhat.com/errata/RHSA-2018:3558
- https://curl.haxx.se/docs/adv_20161102H.html
- https://www.tenable.com/security/tns-2016-21
- http://www.securitytracker.com/id/1037192
- http://www.oracle.com/technetwork/security-advisory/cpuoct2018-4428296.html
- http://www.securityfocus.com/bid/94105
- https://access.redhat.com/errata/RHSA-2018:2486
- https://security.gentoo.org/glsa/201701-47
- https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2016-8622
ADP enrichment
No English description supplied.
- https://access.redhat.com/errata/RHSA-2018:3558
- https://curl.haxx.se/docs/adv_20161102H.html
- https://www.tenable.com/security/tns-2016-21
- http://www.securitytracker.com/id/1037192
- http://www.oracle.com/technetwork/security-advisory/cpuoct2018-4428296.html
- http://www.securityfocus.com/bid/94105
- https://access.redhat.com/errata/RHSA-2018:2486
- https://security.gentoo.org/glsa/201701-47
- https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2016-8622
No English description supplied.
No references supplied.