CVE-2017-17426

Advisory lineage Upstream: 0 Downstream: 3
Modified
Published: 05 Dec 2017, 17:00
Last modified:16 Sept 2024, 16:32

Vulnerability Summary

Overall Risk (default)
medium
42/100
CVSS Score
8.1 HIGH
v3.0 (nvd)
EPSS Score
0.36% LOW
0% probability 0.00%
KEV
Not listed
Ransomware
No reports
Public exploits
1 found
Dark Web
Not detected

Timeline

05 Dec 2017, 17:00
Published
Vulnerability first disclosed
16 Sept 2024, 16:32
Last Modified
Vulnerability information updated

Description

The malloc function in the GNU C Library (aka glibc or libc6) 2.26 could return a memory block that is too small if an attempt is made to allocate an object whose size is close to SIZE_MAX, potentially leading to a subsequent heap overflow. This occurs because the per-thread cache (aka tcache) feature enables a code path that lacks an integer overflow check.

CVSS Metrics

  • v3.0•HIGH•Score: 8.1CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H
  • v2.0•MEDIUM•Score: 6.8AV:N/AC:M/Au:N/C:P/I:P/A:P

EPSS Trends

Current EPSS score: 0.36%• Percentile: 58%

Techniques & Countermeasures

  • CWE-190•Integer Overflow or Wraparound

    The 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.

Affected Systems

  • gnu•glibc

    2.26

References (2)