CVE-2013-4347: The (1) make_nonce, (2) generate_nonce, and (3) generate_verifier functions in SimpleGeo python-oauth2 uses we

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MEDIUM 5.8MITIGATE

CVE-2013-4347 is a medium-severity flaw (CVSS 5.8) affecting python-oauth2. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

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.

Why this priority

No elevated risk signals yet

No fix is published yet: follow the downgrade or mitigation steps.

Risk facts

CVSS score	5.8 (Medium)
EPSS exploit chance	2.5% (top 16%)
CISA exploited list	No
Weakness	CWE-310
Published	2014-05-20
Last modified	2026-06-16

Publisher (CNA): Red Hat, Inc. · Vendor: urbanairship

Last updated 2026-06-16 · Sources: CVE Program, NVD, CISA KEV, EPSS and vendor advisories · How we score

Am I affected?

Timeline

2014-05-20 14:55 UTCPublished CVE record published
2026-06-16 23:57 UTCUpdated Record last modified

urbanairship python-oauth2 MITIGATE

Affected: all versions

Fixed in: no fixed release known

Safe to downgrade to: no unaffected older release

1. Check installed version

apt-cache policy python-oauth2 || rpm -q python-oauth2 || python-oauth2 --version

No fixed or unaffected release known

Apply the vendor mitigation from the advisory, disable the affected feature, or restrict network access.

Verify at the official source NVD · CVE Program · Report a problem with this page
Scores and fixes here are computed automatically from those and other public sources. Confirm with the vendor advisory before changing production systems.

Quick answers

How do I fix CVE-2013-4347?

python-oauth2: mitigate or apply the listed mitigation. Exact commands for each OS are on this page.

Is CVE-2013-4347 being exploited?

CVE-2013-4347 is not on the CISA Known Exploited Vulnerabilities list at the time of the last update. Check again, as this can change.

What does CVE-2013-4347 affect?

CVE-2013-4347 affects python-oauth2. Severity is medium (CVSS 5.8). 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.

How urgent is CVE-2013-4347?

Priority 41/100. No elevated risk signals yet.

Software pages

Python vulnerabilities

Related CVEs

CVE-2013-4346 MEDIUM 4.3 MITIGATE The Server.verify_request function in SimpleGeo python-oauth2 does not check the nonce, which allows remote at

References

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