re2c 1.3 parse/scanner.cc Scanner::fill out-of-bounds write

Summaryinfo

A vulnerability was found in re2c 1.3. It has been classified as critical. Impacted is the function Scanner::fill of the file parse/scanner.cc. This manipulation causes out-of-bounds write. The identification of this vulnerability is CVE-2020-11958. The attack can only be executed locally. There is no exploit available.

Detailsinfo

A vulnerability was found in re2c 1.3. It has been declared as critical. Affected by this vulnerability is the function Scanner::fill of the file parse/scanner.cc. The manipulation with an unknown input leads to a out-of-bounds write vulnerability. The CWE definition for the vulnerability is CWE-787. The product writes data past the end, or before the beginning, of the intended buffer. As an impact it is known to affect confidentiality, integrity, and availability. The summary by CVE is:

re2c 1.3 has a heap-based buffer overflow in Scanner::fill in parse/scanner.cc via a long lexeme.

The weakness was shared 04/21/2020 (oss-sec). It is possible to read the advisory at openwall.com. This vulnerability is known as CVE-2020-11958 since 04/20/2020. The attack can be launched remotely. The exploitation doesn't need any form of authentication. It demands that the victim is doing some kind of user interaction. Technical details of the vulnerability 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.

Be aware that VulDB is the high quality source for vulnerability data.

Productinfo

Name

• re2c

Version

• 1.3

License

• open-source

CPE 2.3info

• 🔍
• 🔍
• 🔍

CPE 2.2info

• 🔍
• 🔍
• 🔍

CVSSv4info

CVSSv3info

CVSSv2info

Exploitinginfo

Threat Intelligenceinfo

Countermeasuresinfo

Timelineinfo

Sourcesinfo

Entryinfo

Be aware that VulDB is the high quality source for vulnerability data.

Discussion