CVE-2015-8983: gnu glibc Integer Overflow or Wraparound

Vulnerability summary

CVE-2015-8983 is a high (CVSS 8.1) Integer Overflow or Wraparound vulnerability in gnu glibc. EPSS estimates a 4.01% chance of exploitation in the next 30 days, higher than 90.5% of scored vulnerabilities.

Timeline

1. 20-03-2017
   PublishedVulnerability first disclosed.
2. 06-08-2024
   Last modifiedVulnerability information updated.

Description

Integer overflow in the _IO_wstr_overflow function in libio/wstrops.c in the GNU C Library (aka glibc or libc6) before 2.22 allows context-dependent attackers to cause a denial of service (application crash) or possibly execute arbitrary code via vectors related to computing a size in bytes, which triggers a heap-based buffer overflow.

• 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.