01 Record

CVE-2013-4347

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

UnratedPUBLISHEDCNA: redhat

CNA base scoreUnratedNo CNA CVSS vector

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02 Description

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

03 Exploitation and scoring

Exploitation: Not assessed. CISA has not published an exploitation assessment for this record, and it is not in the KEV catalog. That is an absence of assessment, not a finding of no risk.
SSVC decision: Not assessed by CISA
EPSS probability: 2.45% probability of exploitation activity in the next 30 days.
EPSS percentile: Equal to or higher than the score of 83.9% of scored records. A rank, not a probability.
NVD base score: The NVD has published no score for this record
NVD CVSS vector: No NVD score to derive
NVD analysis status: Modified. NVD last modified this record on 2026-06-16.
Red Hat severity: Moderate. Red Hat's rating for its own products, not a CVSS rating.

Exploit-prediction scores from FIRST. Independent scoring and analysis status from the NVD. Vendor severity from Red Hat. Exploitation assessment and catalog membership from CISA.

04 Metadata

Published

2014-05-20 14:00Z12 YR AGO

Last updated

2024-08-06 16:38Z2 YR AGO

Reserved

2013-06-12

Assigning CNA

redhat

Record state

PUBLISHED

Severity

Not rated by the issuing CNA

CNA CVSS vector

Not published by the issuing CNA

Weaknesses

CWE-310
CWE-338Use of Cryptographically Weak Pseudo-Random Number Generator (PRNG)Base

Data version

5.1

Document digest

3cdee70a0118bf33e39ea1860a5d017c7394c752aebe09ba3508a7ca13349439

05 Affected products

VendorProductVersionsPlatforms

redhatcloudforms_managementengineNot specified—

redhatopenstackNot specified—

redhatsatelliteNot specified—

redhatsatellite_capsuleNot specified—

urbanairshippython-oauth2Not specified—

06 References

www.securityfocus.com62388http://www.securityfocus.com/bid/62388vdb-entryx_refsource_BID
github.comhttps://github.com/simplegeo/python-oauth2/issues/9x_refsource_MISC
www.openwall.com[oss-security] 20130912 Re: cve requests for python-oauth2http://www.openwall.com/lists/oss-security/2013/09/12/7mailing-listx_refsource_MLIST
github.comhttps://github.com/simplegeo/python-oauth2/pull/146x_refsource_MISC