Attacker Value
Unknown
(0 users assessed)
Exploitability
Unknown
(0 users assessed)
User Interaction
Unknown
Privileges Required
Unknown
Attack Vector
Unknown
0

CVE-2024-9681

Disclosure Date: November 06, 2024 •
CVE-2024-9681
Add MITRE ATT&CK tactics and techniques that apply to this CVE.

Description

When curl is asked to use HSTS, the expiry time for a subdomain might
overwrite a parent domain’s cache entry, making it end sooner or later than
otherwise intended.

This affects curl using applications that enable HSTS and use URLs with the
insecure HTTP:// scheme and perform transfers with hosts like
x.example.com as well as example.com where the first host is a subdomain
of the second host.

(The HSTS cache either needs to have been populated manually or there needs to
have been previous HTTPS accesses done as the cache needs to have entries for
the domains involved to trigger this problem.)

When x.example.com responds with Strict-Transport-Security: headers, this
bug can make the subdomain’s expiry timeout bleed over and get set for the
parent domain example.com in curl’s HSTS cache.

The result of a triggered bug is that HTTP accesses to example.com get
converted to HTTPS for a different period of time than what was asked for by
the origin server. If example.com for example stops supporting HTTPS at its
expiry time, curl might then fail to access http://example.com until the
(wrongly set) timeout expires. This bug can also expire the parent’s entry
earlier, thus making curl inadvertently switch back to insecure HTTP earlier
than otherwise intended.

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CVSS V3 Severity and Metrics
Base Score:
None
Impact Score:
Unknown
Exploitability Score:
Unknown
Vector:
Unknown
Attack Vector (AV):
Unknown
Attack Complexity (AC):
Unknown
Privileges Required (PR):
Unknown
User Interaction (UI):
Unknown
Scope (S):
Unknown
Confidentiality (C):
Unknown
Integrity (I):
Unknown
Availability (A):
Unknown

General Information

Offensive Application
Unknown
Utility Class
Unknown
Ports
Unknown
OS
Unknown
Vulnerable Versions
curl 8.10.1
curl 8.10.0
curl 8.9.1
curl 8.9.0
curl 8.8.0
curl 8.7.1
curl 8.7.0
curl 8.6.0
curl 8.5.0
curl 8.4.0
curl 8.3.0
curl 8.2.1
curl 8.2.0
curl 8.1.2
curl 8.1.1
curl 8.1.0
curl 8.0.1
curl 8.0.0
curl 7.88.1
curl 7.88.0
curl 7.87.0
curl 7.86.0
curl 7.85.0
curl 7.84.0
curl 7.83.1
curl 7.83.0
curl 7.82.0
curl 7.81.0
curl 7.80.0
curl 7.79.1
curl 7.79.0
curl 7.78.0
curl 7.77.0
curl 7.76.1
curl 7.76.0
curl 7.75.0
curl 7.74.0
Prerequisites
Unknown
Discovered By
Unknown
PoC Author
Unknown
Metasploit Module
Unknown
Reporter
Unknown

Vendors

  • curl

Products

  • curl

Additional Info

Authenticated
Unknown
Exploitable
Unknown
Reliability
Unknown
Stability
Unknown
Available Mitigations
Unknown
Shelf Life
Unknown
Userbase/Installbase
Unknown
Patch Effectiveness
Unknown
Technical Analysis