CVE-2016-5771

Advisory lineage Upstream: 0 Downstream: 8
Modified
Published: 07 Aug 2016, 10:00
Last modified:06 Aug 2024, 01:15

Vulnerability Summary

Overall Risk (default)
high
70/100
CVSS Score
9.8 CRITICAL
v3.1 (nvd)
EPSS Score
9.58% LOW
10% probability -4.01%
KEV
Not listed
Ransomware
No reports
Public exploits
1 found
Dark Web
Not detected

Timeline

07 Aug 2016, 10:00
Published
Vulnerability first disclosed
06 Aug 2024, 01:15
Last Modified
Vulnerability information updated

Description

spl_array.c in the SPL extension in PHP before 5.5.37 and 5.6.x before 5.6.23 improperly interacts with the unserialize implementation and garbage collection, which allows remote attackers to execute arbitrary code or cause a denial of service (use-after-free and application crash) via crafted serialized data.

CVSS Metrics

  • v3.1•CRITICAL•Score: 9.8CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
  • v2.0•HIGH•Score: 7.5AV:N/AC:L/Au:N/C:P/I:P/A:P

EPSS Trends

Current EPSS score: 9.58%• Percentile: 93%

Techniques & Countermeasures

  • CWE-416•Use After Free

    The product reuses or references memory after it has been freed. At some point afterward, the memory may be allocated again and saved in another pointer, while the original pointer references a location somewhere within the new allocation. Any operations using the original pointer are no longer valid because the memory "belongs" to the code that operates on the new pointer.

Affected Systems

  • debian•debian_linux

    8.0

  • opensuse•leap

    42.1

  • opensuse•opensuse

    13.2

  • Unknown•PHP

    < 5.5.37 | ≥ 5.6.0, < 5.6.23 | ≥ 7.0.0, < 7.0.8

References (12)