Oniguruma 6.9.5_rev1 Regex src/regcomp.c concat_opt_exact_str memory corruption

Summaryinfo

A vulnerability was found in Oniguruma 6.9.5_rev1 and classified as critical. This impacts the function concat_opt_exact_str of the file src/regcomp.c of the component Regex Handler. The manipulation results in memory corruption. This vulnerability was named CVE-2020-26159. There is no available exploit.

Detailsinfo

A vulnerability, which was classified as critical, was found in Oniguruma 6.9.5_rev1. Affected is the function concat_opt_exact_str of the file src/regcomp.c of the component Regex Handler. The manipulation with an unknown input leads to a memory corruption vulnerability. CWE is classifying the issue as 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. This is going to have an impact on confidentiality, integrity, and availability. CVE summarizes:

In Oniguruma 6.9.5_rev1, an attacker able to supply a regular expression for compilation may be able to overflow a buffer by one byte in concat_opt_exact_str in src/regcomp.c .

The weakness was presented 09/30/2020 (oss-sec). The advisory is available at openwall.com. This vulnerability is traded as CVE-2020-26159 since 09/30/2020. Technical details are known, but there is no available exploit.

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

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

Productinfo

Name

• Oniguruma

Version

• 6.9.5_rev1

CPE 2.3info

• 🔍

CPE 2.2info

• 🔍

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

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