CVE Tools
Sign in

CVE-2013-4347

Published: May 20, 2014Updated: May 6, 2026 Sources: CVE List NVD GHSACWE-310
NVD MITRE
5.8CVSSMEDIUM
EPSS Score
2.4%
Top 17.9%
CISA KEV
Not in KEV
Exploits
No Known Exploits
Remediation
Patch Available

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 the nonce via a brute force attack.

CVSS Vector Breakdown

AV:NAC:MAu:NC:PI:PA:N
Exploitability
AV:NAccess Vector
Network
AC:MAccess Complexity
Medium
Au:NAuthentication
None
Impact
C:PConfidentiality
Partial
I:PIntegrity
Partial
A:NAvailability
None
Open in CVSS calculator →

Weaknesses

CWE-310

Affected Products

python-oauth2urbanairship
oauth2PyPIOSS Libraries
n/an/a
pypipackage-ecosystemOSS Libraries

Exploitability

Official Patch Available

References

http://www.openwall.com/lists/oss-security/2013/09/12/7
openwall.com
http://www.securityfocus.com/bid/62388
securityfocus.com
https://github.com/simplegeo/python-oauth2/issues/9
github.com
and 9 more references View all →

Timeline

Published
May 20, 2014
Last Updated
May 6, 2026

Unlock Complete Vulnerability Intelligence

Get the full picture for CVE-2013-4347 and every CVE in our database. Create a free account — no credit card required.

Create Free Account
Plain-language analysis
Impact assessment and exploitation scenario in plain English
Attack graph visualization
Interactive attack path and kill chain mapping
Exploit details & PoC links
ExploitDB, Metasploit, GitHub PoCs with direct links
Nuclei scanner templates
Ready-to-use vulnerability scanner templates
Full remediation guide
Patch instructions, workarounds, and compliance impact
Interactive AI chat
Ask questions about this vulnerability in natural language
Related vulnerabilities
Semantically similar CVEs and attack patterns
REST API & MCP access
Integrate vulnerability data into your workflows