CVE-2019-19012: debian debian_linux Out-of-bounds Read

Vulnerability summary

CVE-2019-19012 is a critical (CVSS 9.8) Out-of-bounds Read vulnerability in debian debian_linux. EPSS estimates a 10.63% chance of exploitation in the next 30 days, higher than 95.8% of scored vulnerabilities. 2 public exploits are recorded.

Timeline

1. 16-11-2019
   PublishedVulnerability first disclosed.
2. 05-08-2024
   Last modifiedVulnerability information updated.

Description

An integer overflow in the search_in_range function in regexec.c in Oniguruma 6.x before 6.9.4_rc2 leads to an out-of-bounds read, in which the offset of this read is under the control of an attacker. (This only affects the 32-bit compiled version). Remote attackers can cause a denial-of-service or information disclosure, or possibly have unspecified other impact, via a crafted regular expression.

• CWE-125Out-of-bounds ReadThe product reads data past the end, or before the beginning, of the intended buffer.
• CWE-190Integer Overflow or WraparoundThe product performs a calculation that can produce an integer overflow or wraparound when the logic assumes that the resulting value will always be larger than the original value. This occurs when an integer value is incremented to a value that is too large to store in the associated representation. When this occurs, the value may become a very small or negative number.