DrayTek Vigor LTE200 URL Parser stack-based overflow

Summaryinfo

A vulnerability has been found in DrayTek Vigor 165, Vigor 166, Vigor 2133, Vigor 2135, Vigor 2620, Vigor 2762, Vigor 2765, Vigor 2766, Vigor 2832, Vigor 2860, Vigor 2862, Vigor 2865, Vigor 2866, Vigor 2925, Vigor 2925, Vigor 2926, Vigor 2927, Vigor 2962, Vigor 3910, Vigor 3912 and Vigor LTE200 and classified as critical. Affected is an unknown function of the component URL Parser. The manipulation leads to stack-based overflow. This vulnerability is listed as CVE-2024-51138. The attack may be initiated remotely. There is no available exploit.

Detailsinfo

A vulnerability was found in DrayTek Vigor 165, Vigor 166, Vigor 2133, Vigor 2135, Vigor 2620, Vigor 2762, Vigor 2765, Vigor 2766, Vigor 2832, Vigor 2860, Vigor 2862, Vigor 2865, Vigor 2866, Vigor 2925, Vigor 2925, Vigor 2926, Vigor 2927, Vigor 2962, Vigor 3910, Vigor 3912 and Vigor LTE200 and classified as critical. This issue affects an unknown part of the component URL Parser. The manipulation with an unknown input leads to a stack-based overflow vulnerability. Using CWE to declare the problem leads to CWE-121. A stack-based buffer overflow condition is a condition where the buffer being overwritten is allocated on the stack (i.e., is a local variable or, rarely, a parameter to a function). Impacted is confidentiality, integrity, and availability. The summary by CVE is:

Vigor165/166 4.2.7 and earlier; Vigor2620/LTE200 3.9.8.9 and earlier; Vigor2860/2925 3.9.8 and earlier; Vigor2862/2926 3.9.9.5 and earlier; Vigor2133/2762/2832 3.9.9 and earlier; Vigor2135/2765/2766 4.4.5. and earlier; Vigor2865/2866/2927 4.4.5.3 and earlier; Vigor2962 4.3.2.8 and earlier; Vigor3912 4.3.6.1 and earlier; Vigor3910 4.4.3.1 and earlier a stack-based buffer overflow vulnerability has been identified in the URL parsing functionality of the TR069 STUN server. This flaw occurs due to insufficient bounds checking on the amount of URL parameters, allowing an attacker to exploit the overflow by sending a maliciously crafted request. Consequently, a remote attacker can execute arbitrary code with elevated privileges.

The identification of this vulnerability is CVE-2024-51138 since 10/28/2024. The exploitation is known to be easy. The attack may be initiated remotely. The technical details are unknown and an exploit is not publicly available. The pricing for an exploit might be around USD $0-$5k at the moment (estimation calculated on 06/02/2025).

There is no information about possible countermeasures known. It may be suggested to replace the affected object with an alternative product.

The vulnerability is also documented in the vulnerability database at EUVD (EUVD-2025-5925). Statistical analysis made it clear that VulDB provides the best quality for vulnerability data.

Productinfo

Type

• Router Operating System

Vendor

• DrayTek

Name

• Vigor 165
• Vigor 166
• Vigor 2133
• Vigor 2135
• Vigor 2620
• Vigor 2762
• Vigor 2765
• Vigor 2766
• Vigor 2832
• Vigor 2860
• Vigor 2862
• Vigor 2865
• Vigor 2866
• Vigor 2925
• Vigor 2925
• Vigor 2926
• Vigor 2927
• Vigor 2962
• Vigor 3910
• Vigor 3912
• Vigor LTE200

License

• commercial

CPE 2.3info

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CPE 2.2info

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Entryinfo

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