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CVE-2013-4347

Good to know:

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Date: May 20, 2014

The (1) make_nonce, (2) generate_nonce, and (3) generate_verifier functions in SimpleGeo python-oauth2 uses weak random numbers to generate nonces, which makes it easier for remote attackers to guess the nonce via a brute force attack.

Language: Python

Severity Score

Related Resources (13)

https://github.com/simplegeo/python-oauth2/issues/9
http://www.securityfocus.com/bid/62388
http://www.openwall.com/lists/oss-security/2013/09/12/7
https://bugzilla.redhat.com/show_bug.cgi?id=1007758
https://github.com/simplegeo/python-oauth2/pull/146
https://access.redhat.com/errata/RHSA-2015:1592
https://github.com/joestump/python-oauth2
https://github.com/pypa/advisory-database/tree/main/vulns/oauth2/PYSEC-2014-86.yaml
https://nvd.nist.gov/vuln/detail/CVE-2013-4347
https://access.redhat.com/errata/RHSA-2015:1591
https://access.redhat.com/security/cve/CVE-2013-4347
https://github.com/joestump/python-oauth2/commit/82dd2cdd4954cd7b8983d5d64c0dfd9072bf4650
https://www.mend.io/vulnerability-database/CVE-2013-4347

Severity Score

Weakness Type (CWE)

Cryptographic Issues

CWE-310

Use of Insufficiently Random Values

CWE-330

Top Fix

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CVSS v3.1

Base Score:
Attack Vector (AV): NETWORK
Attack Complexity (AC): HIGH
Privileges Required (PR): NONE
User Interaction (UI): NONE
Scope (S): UNCHANGED
Confidentiality (C): LOW
Integrity (I): LOW
Availability (A): NONE

CVSS v2

Base Score:
Access Vector (AV): NETWORK
Access Complexity (AC): MEDIUM
Authentication (AU): NONE
Confidentiality (C): PARTIAL
Integrity (I): PARTIAL
Availability (A): NONE
Additional information:

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