CVE-2016-8622
"curl heap corruption via oversized URL decode"
Description
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.
INFO
Published Date :
July 31, 2018, 9:29 p.m.
Last Modified :
Nov. 7, 2023, 2:36 a.m.
Source :
[email protected]
Remotely Exploitable :
Yes !
Impact Score :
5.9
Exploitability Score :
3.9
Public PoC/Exploit Available at Github
CVE-2016-8622 has a 2 public PoC/Exploit available at Github.
Go to the Public Exploits tab to see the list.
References to Advisories, Solutions, and Tools
Here, you will find a curated list of external links that provide in-depth
information, practical solutions, and valuable tools related to
CVE-2016-8622.
| URL | Resource |
|---|---|
| http://www.oracle.com/technetwork/security-advisory/cpuoct2018-4428296.html | |
| http://www.securityfocus.com/bid/94105 | Third Party Advisory VDB Entry |
| http://www.securitytracker.com/id/1037192 | Third Party Advisory VDB Entry |
| https://access.redhat.com/errata/RHSA-2018:2486 | Third Party Advisory |
| https://access.redhat.com/errata/RHSA-2018:3558 | |
| https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2016-8622 | Issue Tracking Patch Third Party Advisory |
| https://curl.haxx.se/docs/adv_20161102H.html | Patch Vendor Advisory |
| https://security.gentoo.org/glsa/201701-47 | Third Party Advisory |
| https://www.tenable.com/security/tns-2016-21 | Third Party Advisory |
We scan GitHub repositories to detect new proof-of-concept exploits. Following list is a collection of public exploits and proof-of-concepts, which have been published on GitHub (sorted by the most recently updated).
None
asp-net-core csharp docker dockerfile javascript react webapi docker-compose
C# Dockerfile HTML JavaScript CSS
Map Vulnerabilities into Different Layers of the Container Image
Python
Results are limited to the first 15 repositories due to potential performance issues.
The following list is the news that have been mention
CVE-2016-8622 vulnerability anywhere in the article.
The following table lists the changes that have been made to the
CVE-2016-8622 vulnerability over time.
Vulnerability history details can be useful for understanding the evolution of a vulnerability, and for identifying the most recent changes that may impact the vulnerability's severity, exploitability, or other characteristics.
-
CVE Modified by [email protected]
May. 14, 2024
Action Type Old Value New Value -
CVE Modified by [email protected]
Nov. 07, 2023
Action Type Old Value New Value Removed CVSS V2 Red Hat, Inc. (AV:N/AC:H/Au:N/C:N/I:P/A:N) -
CVE Modified by [email protected]
Mar. 11, 2020
Action Type Old Value New Value Added CVSS V2 Red Hat, Inc. (AV:N/AC:H/Au:N/C:N/I:P/A:N) -
CVE Modified by [email protected]
Oct. 09, 2019
Action Type Old Value New Value Added CVSS V3 Red Hat, Inc. AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:L/A:N Added CWE Red Hat, Inc. CWE-122 Added CWE Red Hat, Inc. CWE-190 -
CVE Modified by [email protected]
Nov. 13, 2018
Action Type Old Value New Value Added Reference https://access.redhat.com/errata/RHSA-2018:3558 [No Types Assigned] -
CVE Modified by [email protected]
Oct. 17, 2018
Action Type Old Value New Value Added Reference http://www.oracle.com/technetwork/security-advisory/cpuoct2018-4428296.html [No Types Assigned] -
Initial Analysis by [email protected]
Oct. 16, 2018
Action Type Old Value New Value Added CVSS V2 (AV:N/AC:L/Au:N/C:P/I:P/A:P) Added CVSS V3 AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H Changed Reference Type https://security.gentoo.org/glsa/201701-47 No Types Assigned https://security.gentoo.org/glsa/201701-47 Third Party Advisory Changed Reference Type https://curl.haxx.se/docs/adv_20161102H.html No Types Assigned https://curl.haxx.se/docs/adv_20161102H.html Patch, Vendor Advisory Changed Reference Type http://www.securityfocus.com/bid/94105 No Types Assigned http://www.securityfocus.com/bid/94105 Third Party Advisory, VDB Entry Changed Reference Type https://www.tenable.com/security/tns-2016-21 No Types Assigned https://www.tenable.com/security/tns-2016-21 Third Party Advisory Changed Reference Type https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2016-8622 No Types Assigned https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2016-8622 Issue Tracking, Patch, Third Party Advisory Changed Reference Type http://www.securitytracker.com/id/1037192 No Types Assigned http://www.securitytracker.com/id/1037192 Third Party Advisory, VDB Entry Changed Reference Type https://access.redhat.com/errata/RHSA-2018:2486 No Types Assigned https://access.redhat.com/errata/RHSA-2018:2486 Third Party Advisory Added CWE CWE-787 Added CPE Configuration OR *cpe:2.3:a:haxx:libcurl:*:*:*:*:*:*:*:* versions up to (excluding) 7.51.0 -
CVE Modified by [email protected]
Aug. 17, 2018
Action Type Old Value New Value Added Reference https://access.redhat.com/errata/RHSA-2018:2486 [No Types Assigned] -
CVE Modified by [email protected]
Aug. 02, 2018
Action Type Old Value New Value Added Reference https://www.tenable.com/security/tns-2016-21 [No Types Assigned] Added Reference https://security.gentoo.org/glsa/201701-47 [No Types Assigned] Added Reference http://www.securitytracker.com/id/1037192 [No Types Assigned] Added Reference http://www.securityfocus.com/bid/94105 [No Types Assigned]
CWE - Common Weakness Enumeration
While CVE identifies
specific instances of vulnerabilities, CWE categorizes the common flaws or
weaknesses that can lead to vulnerabilities. CVE-2016-8622 is
associated with the following CWEs:
Common Attack Pattern Enumeration and Classification (CAPEC)
Common Attack Pattern Enumeration and Classification
(CAPEC)
stores attack patterns, which are descriptions of the common attributes and
approaches employed by adversaries to exploit the CVE-2016-8622
weaknesses.
Exploit Prediction
EPSS is a daily estimate of the probability of exploitation activity being observed over the next 30 days.
1.29 }} 0.02%
score
0.86221
percentile