CVE-2013-4347
medium
CVSS v3
—
CVSS v4 NEW
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VIR risk
5.8
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.
Predictions
Exploit likelihood
30%
Patch ETA
—
Heuristic predictions, AS-IS, for prioritization only.
Mitigations
No mitigations published for this CVE yet.
The vendor-content worker queues fetches as references arrive (check back in a few minutes). Or — if you've already worked around this in production — publish your fix to the community-verified tier.
✚ Propose a mitigation on Community → Mitigations published via the community go through AI scoring + 2 human reviewers + 7-day silent objection window before landing here withsource_tier=community-verified.
Package impact
| Ecosystem | Package | Vulnerable | Fixed |
|---|---|---|---|
| PyPI | oauth2 | <1.9rc1 | 1.9rc1 |
Application impact
| Vendor | Product | Versions | Fixed |
|---|---|---|---|
| urbanairship | python-oauth2 | - | |
References
- http://www.openwall.com/lists/oss-security/2013/09/12/7
- http://www.securityfocus.com/bid/62388
- https://github.com/simplegeo/python-oauth2/issues/9
- https://github.com/simplegeo/python-oauth2/pull/146
- https://nvd.nist.gov/vuln/detail/CVE-2013-4347
- https://github.com/joestump/python-oauth2/commit/82dd2cdd4954cd7b8983d5d64c0dfd9072bf4650
- https://access.redhat.com/errata/RHSA-2015:1591
- https://access.redhat.com/errata/RHSA-2015:1592
- https://access.redhat.com/security/cve/CVE-2013-4347
- https://bugzilla.redhat.com/show_bug.cgi?id=1007758
- https://github.com/joestump/python-oauth2
- https://github.com/pypa/advisory-database/tree/main/vulns/oauth2/PYSEC-2014-86.yaml
CWEs
CWE-310
Community-verified mitigations for this CVE will appear above when contributors publish them.
Verify integrity in audit chain (admin only). AS-IS.