CVE-2024-6874
Libcurl Punycode Buffer Overflow
Description
libcurl's URL API function [curl_url_get()](https://curl.se/libcurl/c/curl_url_get.html) offers punycode conversions, to and from IDN. Asking to convert a name that is exactly 256 bytes, libcurl ends up reading outside of a stack based buffer when built to use the *macidn* IDN backend. The conversion function then fills up the provided buffer exactly - but does not null terminate the string. This flaw can lead to stack contents accidently getting returned as part of the converted string.
INFO
Published Date :
July 24, 2024, 8:15 a.m.
Last Modified :
Nov. 21, 2024, 9:50 a.m.
Source :
2499f714-1537-4658-8207-48ae4bb9eae9
Remotely Exploitable :
Yes !
Impact Score :
1.4
Exploitability Score :
2.8
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-2024-6874.
| URL | Resource |
|---|---|
| http://www.openwall.com/lists/oss-security/2024/07/24/2 | Mailing List Third Party Advisory |
| https://curl.se/docs/CVE-2024-6874.html | Vendor Advisory |
| https://curl.se/docs/CVE-2024-6874.json | Vendor Advisory |
| https://hackerone.com/reports/2604391 | Exploit Issue Tracking Technical Description |
| http://www.openwall.com/lists/oss-security/2024/07/24/2 | Mailing List Third Party Advisory |
| https://curl.se/docs/CVE-2024-6874.html | Vendor Advisory |
| https://curl.se/docs/CVE-2024-6874.json | Vendor Advisory |
| https://hackerone.com/reports/2604391 | Exploit Issue Tracking Technical Description |
| https://security.netapp.com/advisory/ntap-20240822-0004/ |
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).
Results are limited to the first 15 repositories due to potential performance issues.
The following list is the news that have been mention
CVE-2024-6874 vulnerability anywhere in the article.
The following table lists the changes that have been made to the
CVE-2024-6874 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 af854a3a-2127-422b-91ae-364da2661108
Nov. 21, 2024
Action Type Old Value New Value Added Reference http://www.openwall.com/lists/oss-security/2024/07/24/2 Added Reference https://curl.se/docs/CVE-2024-6874.html Added Reference https://curl.se/docs/CVE-2024-6874.json Added Reference https://hackerone.com/reports/2604391 Added Reference https://security.netapp.com/advisory/ntap-20240822-0004/ -
Initial Analysis by [email protected]
Sep. 10, 2024
Action Type Old Value New Value Added CVSS V3.1 NIST AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N Changed Reference Type http://www.openwall.com/lists/oss-security/2024/07/24/2 No Types Assigned http://www.openwall.com/lists/oss-security/2024/07/24/2 Mailing List, Third Party Advisory Changed Reference Type https://curl.se/docs/CVE-2024-6874.html No Types Assigned https://curl.se/docs/CVE-2024-6874.html Vendor Advisory Changed Reference Type https://curl.se/docs/CVE-2024-6874.json No Types Assigned https://curl.se/docs/CVE-2024-6874.json Vendor Advisory Changed Reference Type https://hackerone.com/reports/2604391 No Types Assigned https://hackerone.com/reports/2604391 Exploit, Issue Tracking, Technical Description Added CWE NIST CWE-125 Added CPE Configuration OR *cpe:2.3:a:haxx:libcurl:8.8.0:*:*:*:*:*:*:* -
CVE Modified by 134c704f-9b21-4f2e-91b3-4a467353bcc0
Aug. 01, 2024
Action Type Old Value New Value Added CVSS V3.1 CISA-ADP AV:N/AC:H/PR:L/UI:N/S:U/C:L/I:N/A:N -
CVE Modified by 2499f714-1537-4658-8207-48ae4bb9eae9
Jul. 24, 2024
Action Type Old Value New Value Added Reference curl http://www.openwall.com/lists/oss-security/2024/07/24/2 [No types assigned] -
CVE Received by 2499f714-1537-4658-8207-48ae4bb9eae9
Jul. 24, 2024
Action Type Old Value New Value Added Description libcurl's URL API function [curl_url_get()](https://curl.se/libcurl/c/curl_url_get.html) offers punycode conversions, to and from IDN. Asking to convert a name that is exactly 256 bytes, libcurl ends up reading outside of a stack based buffer when built to use the *macidn* IDN backend. The conversion function then fills up the provided buffer exactly - but does not null terminate the string. This flaw can lead to stack contents accidently getting returned as part of the converted string. Added Reference curl https://curl.se/docs/CVE-2024-6874.json [No types assigned] Added Reference curl https://curl.se/docs/CVE-2024-6874.html [No types assigned] Added Reference curl https://hackerone.com/reports/2604391 [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-2024-6874 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-2024-6874
weaknesses.