CVE-2013-6420: apple mac_os_x
Vulnerability summary
CVE-2013-6420 is a high (CVSS 7.5) vulnerability in apple mac_os_x. EPSS estimates a 35.63% chance of exploitation in the next 30 days, higher than 98.4% of scored vulnerabilities. 2 public exploits are recorded.
Public exploit (exploit-database, 17-12-2013)
Source freshness unavailable
How is this decided?Advisory lineage
Upstream 0 · Downstream 6 · Related 3Timeline
- 17-12-2013PublishedVulnerability first disclosed.
- 06-08-2024Last modifiedVulnerability 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
1 score · 1 source · 1 versionEPSS trend
Probability
35.63%
Chance of exploitation in the next 30 days
Percentile
98%
Versus all other CVEs
30-day change
No change 0.00 pp
From 35.63% on 04-10-2026
Known exploited
Compare KEV catalogsNot in the CISA KEV catalog.
Not in the ENISA CNW catalog.
Not in the CIRCL catalog.
Public exploits
2 foundExploit Reference (sektioneins.de)
Maturity: unknown
PHP - 'openssl_x509_parse()' Memory Corruption
Maturity: poc
Weaknesses
CWE · root causeAffected systems
Known conditions: network-reachable, no authentication (CVSS vector). Other conditions: not stated in public data.
Redhat79 products
- php< 0:5.3.3-27.el6_5 | < 0:5.1.6-23.5.el5_3 | < 0:5.1.6-27.el5_6.6 | < 0:5.1.6-40.el5_9.1 | < 0:5.3.3-3.el6_2.11 | < 0:5.3.3-14.el6_3.3 | < 0:5.3.3-23.el6_4.1 | < 0:4.3.2-57.ent | < 0:4.3.9-3.37.el4.1
- php-bcmath< 0:5.3.3-27.el6_5 | < 0:5.1.6-23.5.el5_3 | < 0:5.1.6-27.el5_6.6 | < 0:5.1.6-40.el5_9.1 | < 0:5.3.3-3.el6_2.11 | < 0:5.3.3-14.el6_3.3 | < 0:5.3.3-23.el6_4.1
- php-cli< 0:5.3.3-27.el6_5 | < 0:5.1.6-23.5.el5_3 | < 0:5.1.6-27.el5_6.6 | < 0:5.1.6-40.el5_9.1 | < 0:5.3.3-3.el6_2.11 | < 0:5.3.3-14.el6_3.3 | < 0:5.3.3-23.el6_4.1
- php-common< 0:5.3.3-27.el6_5 | < 0:5.1.6-23.5.el5_3 | < 0:5.1.6-27.el5_6.6 | < 0:5.1.6-40.el5_9.1 | < 0:5.3.3-3.el6_2.11 | < 0:5.3.3-14.el6_3.3 | < 0:5.3.3-23.el6_4.1
- php-dba< 0:5.3.3-27.el6_5 | < 0:5.1.6-23.5.el5_3 | < 0:5.1.6-27.el5_6.6 | < 0:5.1.6-40.el5_9.1 | < 0:5.3.3-3.el6_2.11 | < 0:5.3.3-14.el6_3.3 | < 0:5.3.3-23.el6_4.1
Apple1 product
- mac_os_x≤ 10.9.1
Opensuse1 product
- opensuseEOL11.4 | 12.2 | 12.3 | 13.1
Php1 product
- phpEOL5.4.0 | 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
4 vendors · 82 products
References
33 links- support.apple.com/kb/HT6150X Refsource CONFIRM
Show all 33 references
- www.php.net/ChangeLog-5.phpX Refsource CONFIRM