Ubuntu update for Django



Published: 2016-03-07
Risk Low
Patch available YES
Number of vulnerabilities 2
CVE-ID CVE-2016-2512
CVE-2016-2513
CWE-ID CWE-79
CWE-208
Exploitation vector Network
Public exploit N/A
Vulnerable software
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Ubuntu
Operating systems & Components / Operating system

Vendor Canonical Ltd.

Security Bulletin

This security bulletin contains information about 2 vulnerabilities.

1) Cross-site scripting

EUVDB-ID: #VU1603

Risk: Low

CVSSv3.1: 5.3 [CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N/E:U/RL:O/RC:C]

CVE-ID: CVE-2016-2512

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

Exploit availability: No

Description

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

The weakness exists in the utils.http.is_safe_url function 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 15.10:
python3-django 1.7.9-1ubuntu5.4
python-django 1.7.9-1ubuntu5.4
Ubuntu 14.04 LTS:
python-django 1.6.1-2ubuntu0.14

Vulnerable software versions

Ubuntu: 14.04

CPE2.3 External links

http://www.ubuntu.com/usn/usn-2915-3/


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.

2) Timing attack

EUVDB-ID: #VU1605

Risk: Low

CVSSv3.1: 4.6 [CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N/E:U/RL:O/RC:C]

CVE-ID: CVE-2016-2513

CWE-ID: CWE-208 - Information Exposure Through Timing Discrepancy

Exploit availability: No

Description

The vulnerability allows a remote attacker to obtain potentially sensitive information on the target system.

The weakness exists in the password hasher in contrib/auth/hashers.py due to creating a timing difference between a login request for a user with a password encoded in an older number of iterations and login request for a nonexistent user. A remote attacker can enumerate users via a timing attack involving login requests.

Mitigation

Update the affected packages

Ubuntu 15.10:
python3-django 1.7.9-1ubuntu5.4
python-django 1.7.9-1ubuntu5.4
Ubuntu 14.04 LTS:
python-django 1.6.1-2ubuntu0.14

Vulnerable software versions

Ubuntu: 14.04

CPE2.3 External links

http://www.ubuntu.com/usn/usn-2915-3/


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.



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