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CVE-2024-6874

macidn punycode buffer overread

Published: Jul 24, 2024Updated: Nov 21, 2024 Sources: CVE List NVD BDU csafCWE-125
4.3MEDIUM
NVD MITRE
EPSS Score
0.8%
Top 47.3%
CISA KEV
Not in KEV
Exploits
1 Known
Remediation
Patch Available
Self-Check
OpenVAS

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.

No summary for this CVE yet.

CVSS Vector Breakdown

AV:NAC:LPR:LUI:NS:UC:LI:NA:N
Exploitability
AV:NAttack Vector
Network
AC:LAttack Complexity
Low
PR:LPrivileges Required
Low
UI:NUser Interaction
None
Scope
S:UScope
Unchanged
Impact
C:LConfidentiality
Low
I:NIntegrity
None
A:NAvailability
None
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Weaknesses

CWE-125

Affected Products

curl
oss-project·USaka libcurl, wcurl
curlLibraryLibrary
OSS Libraries / generic-library
haxx
oss-project·SEaka haxx.se
libcurl
OSS Libraries
ООО «РусБИТех-Астра»
commercial·RUaka rusbitech-astra
Astra Linux Special EditionOn-premOS
Operating Systems / linux-distro
АО «ИВК»
commercial·RUaka ivk
АЛЬТ СП 10On-premOS
Operating Systems / linux-distro
Daniel Stenberg
individual-devaka daniel.haxx.se, daniel stenberg (curl author)
cURLLibraryLibrary
OSS Libraries / generic-library
and 1 more affected products View all →

Exploitability

1 exploit source identified

Exploit details including PoC links, Metasploit modules, and scanner templates are available after registration.

View exploit details
Official Patch Available
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Attack Graph

Products CVE Techniques Tactics

Click technique nodes for MITRE ATT&CK details · drag to pan · Ctrl/⌘ + scroll to zoom, or go fullscreen.

MITRE ATT&CK

1 technique
Collection
View detailed technique mapping

References

https://curl.se/docs/CVE-2024-6874.json
curl.se
https://curl.se/docs/CVE-2024-6874.html
curl.se
https://hackerone.com/reports/2604391
hackerone.com
and 126 more references View all →

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