CVE-2013-4347 SimpleGeo python-oauth2 vulnerable to the use of Insufficiently Random Values to generate nonces
Weak random number generation in python-oauth2 allows remote attackers to guess nonces via brute force, potentially bypassing authentication mechanisms.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- Available
What is CVE-2013-4347?
CVE-2013-4347 is a medium-severity vulnerability in n/a, published on 20 May 2014. An attacker can exploit it over the internet without logging in, with no action from the victim.
Official 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.
Weakness: CWE-310
Which versions are affected by CVE-2013-4347?
3 open source packages ship an affected version, including oauth2. It affects 1 product.
| Package | Affected | Fixed in |
|---|---|---|
oauth2 PyPI | All versions | 1.9rc1 |
oauth2 PyPI | All versions | 1.9rc1 |
oauth2 PyPI | All versions | 1.9rc1 |
Products include Urbanairship Python-Oauth2.
How do I fix CVE-2013-4347?
Upgrade oauth2 to 1.9rc1 or later.
Is CVE-2013-4347 being exploited?
There is no known exploitation of CVE-2013-4347 in the wild and no public exploit code.
Other vulnerabilities in n/a
Sources
Also known as GHSA-rv8h-p43r-4x5r, MGASA-2013-0314, PYSEC-2014-86.