cURL up to 8.10.1 comparison using wrong factors

Summaryinfo

A vulnerability labeled as problematic has been found in cURL. This impacts an unknown function. The manipulation results in comparison using wrong factors. This vulnerability is cataloged as CVE-2024-9681. The attack may be launched remotely. There is no exploit available. The affected component should be upgraded.

Detailsinfo

A vulnerability, which was classified as problematic, was found in cURL. Affected is an unknown part. The manipulation with an unknown input leads to a comparison using wrong factors vulnerability. CWE is classifying the issue as CWE-1025. The code performs a comparison between two entities, but the comparison examines the wrong factors or characteristics of the entities, which can lead to incorrect results and resultant weaknesses. This is going to have an impact on confidentiality. CVE summarizes:

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.

The weakness was shared by Newfunction. The advisory is available at curl.se. This vulnerability is traded as CVE-2024-9681 since 10/09/2024. The exploitability is told to be difficult. It is possible to launch the attack remotely. The exploitation doesn't require any form of authentication. The technical details are unknown and an exploit is not available.

The vulnerability scanner Nessus provides a plugin with the ID 210473 (SUSE SLES12 Security Update : curl (SUSE-SU-2024:3927-1)), which helps to determine the existence of the flaw in a target environment.

Upgrading to version 8.11.0 eliminates this vulnerability. The upgrade is hosted for download at curl.se. Applying a patch is able to eliminate this problem. The bugfix is ready for download at github.com. The best possible mitigation is suggested to be upgrading to the latest version.

The vulnerability is also documented in the vulnerability database at Tenable (210473). If you want to get best quality of vulnerability data, you may have to visit VulDB.

Productinfo

Type

• Network Utility Software

Name

• cURL

Version

• 7.0
• 7.1
• 7.2
• 7.3
• 7.4
• 7.5
• 7.6
• 7.7
• 7.8
• 7.9
• 7.10
• 7.11
• 7.12
• 7.13
• 7.14
• 7.15
• 7.16
• 7.17
• 7.18
• 7.19
• 7.20
• 7.21
• 7.22
• 7.23
• 7.24
• 7.25
• 7.26
• 7.27
• 7.28
• 7.29
• 7.30
• 7.31
• 7.32
• 7.33
• 7.34
• 7.35
• 7.36
• 7.37
• 7.38
• 7.39
• 7.40
• 7.41
• 7.42
• 7.43
• 7.44
• 7.45
• 7.46
• 7.47
• 7.48
• 7.49
• 7.50
• 7.51
• 7.52
• 7.53
• 7.54
• 7.55
• 7.56
• 7.57
• 7.58
• 7.59
• 7.60
• 7.61
• 7.62
• 7.63
• 7.64
• 7.65
• 7.66
• 7.67
• 7.68
• 7.69
• 7.70
• 7.71
• 7.72
• 7.73
• 7.74
• 7.74.0
• 7.75
• 7.75.0
• 7.76
• 7.76.0
• 7.76.1
• 7.77
• 7.77.0
• 7.78
• 7.78.0
• 7.79
• 7.79.0
• 7.79.1
• 7.80
• 7.80.0
• 7.81
• 7.81.0
• 7.82
• 7.82.0
• 7.83
• 7.83.0
• 7.83.1
• 7.84
• 7.84.0
• 7.85
• 7.85.0
• 7.86
• 7.86.0
• 7.87
• 7.87.0
• 7.88.0
• 7.88.1
• 8.0
• 8.0.0
• 8.0.1
• 8.1
• 8.1.0
• 8.1.1
• 8.1.2
• 8.2
• 8.2.0
• 8.2.1
• 8.3
• 8.3.0
• 8.4
• 8.4.0
• 8.5
• 8.5.0
• 8.6
• 8.6.0
• 8.7
• 8.7.0
• 8.7.1
• 8.8
• 8.8.0
• 8.9
• 8.9.0
• 8.9.1
• 8.10.0
• 8.10.1

License

• open-source

Website

• Product: https://github.com/curl/curl/

CPE 2.3info

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CPE 2.2info

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Entryinfo

If you want to get best quality of vulnerability data, you may have to visit VulDB.

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