#VU94716 Out-of-bounds read in cURL - CVE-2024-6874

Vulnerability identifier: #VU94716

Vulnerability risk: Medium

CVSSv4.0: [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N/E:U/U:Green]

CVE-ID: CVE-2024-6874

CWE-ID: CWE-125

Exploitation vector: Network

Exploit availability: No

Vulnerable software:
cURL
Client/Desktop applications / Other client software

Vendor: curl.haxx.se

Description

The vulnerability allows a remote attacker to gain access to potentially sensitive information.

The vulnerability exists due to a boundary condition within the curl_url_get() function when parsing IDN URLs. A remote attacker can pass a specially crafted URL to the application, trigger an out-of-bounds read error and read contents of memory on the system.

Mitigation
Install updates from vendor's website.

Vulnerable software versions

cURL: 8.8.0

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External links
http://curl.se/docs/CVE-2024-6874.json
http://curl.se/docs/CVE-2024-6874.html
http://hackerone.com/reports/2604391
http://www.openwall.com/lists/oss-security/2024/07/24/2

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Q & A

Can this vulnerability be exploited remotely?

Yes. This vulnerability can be exploited by a remote non-authenticated attacker via the Internet.

Is there known malware, which exploits this vulnerability?

No. We are not aware of malware exploiting this vulnerability.