Ubuntu update for PHP
| Risk | High |
| Patch available | YES |
| Number of vulnerabilities | 2 |
| CVE-ID | CVE-2013-6420 CVE-2013-6712 |
| CWE-ID | CWE-119 CWE-126 |
| Exploitation vector | Network |
| Public exploit | Public exploit code for vulnerability #1 is available. |
| Vulnerable software Subscribe |
php5 (Ubuntu package) Operating systems & Components / Operating system package or component |
| Vendor | Canonical Ltd. |
Security Bulletin
This security bulletin contains information about 2 vulnerabilities.
1) Buffer overflow
EUVDB-ID: #VU16076
Risk: High
CVSSv3.1: 8.8 [CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H/E:P/RL:O/RC:C]
CVE-ID: CVE-2013-6420
CWE-ID:
CWE-119 - Memory corruption
Exploit availability: Yes
DescriptionThe vulnerability allows a remote attacker to execute arbitrary code on the target system.
The vulnerability exists due to a boundary error when 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. A remote attacker can supply specially crafted X.509 certificates, trigger memory corruption and cause the service to crash or execute arbitrary code on the target system.
Successful exploitation of this vulnerability may result in complete compromise of vulnerable system.
Mitigation- php5-cli 5.5.3+dfsg-1ubuntu2.1
- php5-cgi 5.5.3+dfsg-1ubuntu2.1
- libapache2-mod-php5 5.5.3+dfsg-1ubuntu2.1
- Ubuntu 13.04:
- php5-cli 5.4.9-4ubuntu2.4
- php5-cgi 5.4.9-4ubuntu2.4
- libapache2-mod-php5 5.4.9-4ubuntu2.4
- Ubuntu 12.10:
- php5-cli 5.4.6-1ubuntu1.5
- php5-cgi 5.4.6-1ubuntu1.5
- libapache2-mod-php5 5.4.6-1ubuntu1.5
- Ubuntu 12.04 LTS:
- php5-cli 5.3.10-1ubuntu3.9
- php5-cgi 5.3.10-1ubuntu3.9
- libapache2-mod-php5 5.3.10-1ubuntu3.9
- Ubuntu 10.04 LTS:
- php5-cli 5.3.2-1ubuntu4.22
- php5-cgi 5.3.2-1ubuntu4.22
- libapache2-mod-php5 5.3.2-1ubuntu4.22
php5 (Ubuntu package): 5.3.2-1ubuntu4.1 - 5.3.10-1ubuntu3.8
External linkshttp://www.ubuntu.com/usn/usn-2055-1/
Q & A
Can this vulnerability be exploited remotely?
Yes. This vulnerability can be exploited by a remote non-authenticated attacker via the Internet.
Is there known malware, which exploits this vulnerability?
No. We are not aware of malware exploiting this vulnerability. However, proof of concept for this vulnerability is available.
2) Buffer over-read
EUVDB-ID: #VU16077
Risk: Low
CVSSv3.1: 6.5 [CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H/E:U/RL:O/RC:C]
CVE-ID: CVE-2013-6712
CWE-ID:
CWE-126 - Buffer over-read
Exploit availability: No
DescriptionThe vulnerability allows a remote attacker to cause DoS condition.
The vulnerability exists due to the scan function in ext/date/lib/parse_iso_intervals.c in PHP through 5.5.6 does not properly restrict creation of DateInterval objects. A remote attacker can trigger heap-based buffer over-read and cause the service to crash via a crafted interval specification.
Mitigation- php5-cli 5.5.3+dfsg-1ubuntu2.1
- php5-cgi 5.5.3+dfsg-1ubuntu2.1
- libapache2-mod-php5 5.5.3+dfsg-1ubuntu2.1
- Ubuntu 13.04:
- php5-cli 5.4.9-4ubuntu2.4
- php5-cgi 5.4.9-4ubuntu2.4
- libapache2-mod-php5 5.4.9-4ubuntu2.4
- Ubuntu 12.10:
- php5-cli 5.4.6-1ubuntu1.5
- php5-cgi 5.4.6-1ubuntu1.5
- libapache2-mod-php5 5.4.6-1ubuntu1.5
- Ubuntu 12.04 LTS:
- php5-cli 5.3.10-1ubuntu3.9
- php5-cgi 5.3.10-1ubuntu3.9
- libapache2-mod-php5 5.3.10-1ubuntu3.9
- Ubuntu 10.04 LTS:
- php5-cli 5.3.2-1ubuntu4.22
- php5-cgi 5.3.2-1ubuntu4.22
- libapache2-mod-php5 5.3.2-1ubuntu4.22
php5 (Ubuntu package): 5.3.2-1ubuntu4.1 - 5.3.10-1ubuntu3.8
External linkshttp://www.ubuntu.com/usn/usn-2055-1/
Q & A
Can this vulnerability be exploited remotely?
Yes. This vulnerability can be exploited by a remote non-authenticated attacker via the Internet.
Is there known malware, which exploits this vulnerability?
No. We are not aware of malware exploiting this vulnerability.
