CVE-2013-6420

Advisory lineage Upstream: 0 Downstream: 11
Modified
Published: 17 Dec 2013, 02:00
Last modified:06 Aug 2024, 17:39

Vulnerability Summary

Overall Risk (default)
medium
48/100
CVSS Score
7.5 HIGH
v2.0 (nvd)
EPSS Score
40.22% HIGH
40% probability -6.97%
KEV
Not listed
Ransomware
No reports
Public exploits
2 found
Dark Web
Not detected

Timeline

17 Dec 2013, 02:00
Published
Vulnerability first disclosed
06 Aug 2024, 17:39
Last Modified
Vulnerability information updated

Description

The asn1_time_to_time_t function in ext/openssl/openssl.c in PHP before 5.3.28, 5.4.x before 5.4.23, and 5.5.x before 5.5.7 does not properly parse (1) notBefore and (2) notAfter timestamps in X.509 certificates, which allows remote attackers to execute arbitrary code or cause a denial of service (memory corruption) via a crafted certificate that is not properly handled by the openssl_x509_parse function.

CVSS Metrics

  • v2.0•HIGH•Score: 7.5AV:N/AC:L/Au:N/C:P/I:P/A:P

EPSS Trends

Current EPSS score: 40.22%• Percentile: 97%

Techniques & Countermeasures

  • CWE-119•Improper Restriction of Operations within the Bounds of a Memory Buffer

    The product performs operations on a memory buffer, but it reads from or writes to a memory location outside the buffer's intended boundary. This may result in read or write operations on unexpected memory locations that could be linked to other variables, data structures, or internal program data.

Affected Systems

  • apple•mac_os_x

    ≤ 10.9.1

  • opensuse•opensuse

    11.4 | 12.2 | 12.3 | 13.1

  • Unknown•PHP

    5.4.0 | 5.4.1 | 5.4.2 | 5.4.3 | 5.4.4 | 5.4.5 | 5.4.6 | 5.4.7 | 5.4.8 | 5.4.9 | 5.4.10 | 5.4.11 | 5.4.12 | 5.4.12:rc1 | 5.4.12:rc2 | 5.4.13 | 5.4.13:rc1 | 5.4.14 | 5.4.14:rc1 | 5.4.15 | 5.4.15:rc1 | 5.4.16 | 5.4.16:rc1 | 5.4.17 | 5.4.18 | 5.4.19 | 5.4.20 | 5.4.21 | 5.4.22 | ≤ 5.3.27 | 5.3.0 | 5.3.1 | 5.3.2 | 5.3.3 | 5.3.4 | 5.3.5 | 5.3.6 | 5.3.7 | 5.3.8 | 5.3.9 | 5.3.10 | 5.3.11 | 5.3.12 | 5.3.13 | 5.3.14 | 5.3.15 | 5.3.16 | 5.3.17 | 5.3.18 | 5.3.19 | 5.3.20 | 5.3.21 | 5.3.22 | 5.3.23 | 5.3.24 | 5.3.25 | 5.3.26 | 5.5.0 | 5.5.0:alpha1 | 5.5.0:alpha2 | 5.5.0:alpha3 | 5.5.0:alpha4 | 5.5.0:alpha5 | 5.5.0:alpha6 | 5.5.0:beta1 | 5.5.0:beta2 | 5.5.0:beta3 | 5.5.0:beta4 | 5.5.0:rc1 | 5.5.0:rc2 | 5.5.1 | 5.5.2 | 5.5.3 | 5.5.4 | 5.5.5 | 5.5.6

References (19)