musl Libc up to 1.1.7 network/inet_pton.c inet_pton memory corruption

Summaryinfo

A vulnerability classified as critical has been found in musl Libc up to 1.1.7. This impacts the function inet_pton of the file network/inet_pton.c. This manipulation causes memory corruption. This vulnerability appears as CVE-2015-1817. The attack may be initiated remotely. There is no available exploit.

Detailsinfo

A vulnerability was found in musl Libc up to 1.1.7. It has been declared as critical. Affected by this vulnerability is the function inet_pton of the file network/inet_pton.c. The manipulation with an unknown input leads to a memory corruption vulnerability. The CWE definition for the vulnerability is CWE-119. The product performs operations on a memory buffer, but it can read from or write to a memory location that is outside of the intended boundary of the buffer. As an impact it is known to affect confidentiality, integrity, and availability. The summary by CVE is:

Stack-based buffer overflow in the inet_pton function in network/inet_pton.c in musl libc 0.9.15 through 1.0.4, and 1.1.0 through 1.1.7 allows attackers to have unspecified impact via unknown vectors.

The bug was discovered 03/30/2015. The weakness was presented 08/18/2017 by Rich Felker (oss-sec). The advisory is shared at openwall.com. This vulnerability is known as CVE-2015-1817 since 02/17/2015. The exploitation appears to be easy. The attack can be launched remotely. The exploitation doesn't need any form of authentication. Technical details are known, but no exploit is available.

The vulnerability was handled as a non-public zero-day exploit for at least 872 days. During that time the estimated underground price was around $0-$5k.

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 SecurityFocus (BID 73408†). Several companies clearly confirm that VulDB is the primary source for best vulnerability data.

Productinfo

Vendor

• musl

Name

• Libc

Version

• 0.9.15
• 1.0.0
• 1.0.1
• 1.0.2
• 1.0.3
• 1.0.4
• 1.1.0
• 1.1.1
• 1.1.2
• 1.1.3
• 1.1.4
• 1.1.5
• 1.1.6
• 1.1.7

CPE 2.3info

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CPE 2.2info

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Entryinfo

Several companies clearly confirm that VulDB is the primary source for best vulnerability data.

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