Ubuntu update for PHP



Published: 2018-02-12 | Updated: 2018-11-27
Risk Low
Patch available YES
Number of vulnerabilities 3
CVE-ID CVE-2018-5712
CVE-2017-12933
CVE-2017-16642
CWE-ID CWE-79
CWE-502
CWE-125
Exploitation vector Network
Public exploit Public exploit code for vulnerability #3 is available.
Vulnerable software
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php5 (Ubuntu package)
Operating systems & Components / Operating system package or component

Vendor Canonical Ltd.

Security Bulletin

This security bulletin contains information about 3 vulnerabilities.

1) Reflected cross-site scripting

EUVDB-ID: #VU10389

Risk: Low

CVSSv3.1:

CVE-ID: CVE-2018-5712

CWE-ID: CWE-79 - Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')

Exploit availability: No

Description

The disclosed vulnerability allows a remote attacker to perform cross-site scripting (XSS) attacks.

The vulnerability exists on the PHAR 404 error page due to insufficient sanitization of user-supplied data. A remote attacker can trick the victim to follow a specially crafted link and execute arbitrary HTML and script code in user's browser in context of vulnerable website.

Successful exploitation of this vulnerability may allow a remote attacker to steal potentially sensitive information, change appearance of the web page, perform phishing and drive-by-download attacks.

Mitigation

Update the affected packages

Ubuntu 14.04 LTS:
php5-cli 5.5.9+dfsg-1ubuntu4.23
php5-cgi 5.5.9+dfsg-1ubuntu4.23
libapache2-mod-php5 5.5.9+dfsg-1ubuntu4.23
php5-fpm 5.5.9+dfsg-1ubuntu4.23

Vulnerable software versions

php5 (Ubuntu package): 5.5.9+dfsg-1ubuntu4.6 - 5.5.9+dfsg-1ubuntu4.22


CPE2.3 External links

http://www.ubuntu.com/usn/usn-3566-1/

Q & A

Can this vulnerability be exploited remotely?

Is there known malware, which exploits this vulnerability?

2) Deserialization of untrusted data

EUVDB-ID: #VU9956

Risk: Low

CVSSv3.1:

CVE-ID: CVE-2017-12933

CWE-ID: CWE-502 - Deserialization of Untrusted Data

Exploit availability: No

Description

The vulnerability allows a remote attacker to perform a denial of service (DoS) attack.

The vulnerability exists due to a buffer over-read while unserializing untrusted data in the finish_nested_data function in ext/standard/var_unserializer.re. A remote attacker can perform a denial of service attack.


Mitigation

Update the affected packages

Ubuntu 14.04 LTS:
php5-cli 5.5.9+dfsg-1ubuntu4.23
php5-cgi 5.5.9+dfsg-1ubuntu4.23
libapache2-mod-php5 5.5.9+dfsg-1ubuntu4.23
php5-fpm 5.5.9+dfsg-1ubuntu4.23

Vulnerable software versions

php5 (Ubuntu package): 5.5.9+dfsg-1ubuntu4.6 - 5.5.9+dfsg-1ubuntu4.22


CPE2.3 External links

http://www.ubuntu.com/usn/usn-3566-1/

Q & A

Can this vulnerability be exploited remotely?

Is there known malware, which exploits this vulnerability?

3) Out-of-bounds read

EUVDB-ID: #VU8968

Risk: Low

CVSSv3.1:

CVE-ID: CVE-2017-16642

CWE-ID: CWE-125 - Out-of-bounds read

Exploit availability: Yes

Description

The vulnerability allows a remote attacker to cause DoS condition on the target system.

The weakness exists due to out-of-bounds read in timelib_meridian(). A remote attacker can cause the application to crash.

Mitigation

Update the affected packages

Ubuntu 14.04 LTS:
php5-cli 5.5.9+dfsg-1ubuntu4.23
php5-cgi 5.5.9+dfsg-1ubuntu4.23
libapache2-mod-php5 5.5.9+dfsg-1ubuntu4.23
php5-fpm 5.5.9+dfsg-1ubuntu4.23

Vulnerable software versions

php5 (Ubuntu package): 5.5.9+dfsg-1ubuntu4.6 - 5.5.9+dfsg-1ubuntu4.22


CPE2.3 External links

http://www.ubuntu.com/usn/usn-3566-1/

Q & A

Can this vulnerability be exploited remotely?

Is there known malware, which exploits this vulnerability?



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