CVE-2016-7036 python-jose failure to use a constant time comparison for HMAC keys
Attackers can exploit timing side-channels in HMAC key comparison to bypass cryptographic verification in the python-jose library.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- Available
What is CVE-2016-7036?
CVE-2016-7036 is a critical vulnerability in n/a, published on 23 Jan 2017. An attacker can exploit it over the internet without logging in, with no action from the victim.
Official description
python-jose before 1.3.2 allows attackers to have unspecified impact by leveraging failure to use a constant time comparison for HMAC keys.
Weakness: CWE-361
Which versions are affected by CVE-2016-7036?
3 open source packages ship an affected version, including python-jose. It affects 1 product.
| Package | Affected | Fixed in |
|---|---|---|
python-jose PyPI | All versions | 1.3.2 |
python-jose PyPI | All versions | 1.3.2 |
python-jose PyPI | All versions | 1.3.2 |
Products include Python-Jose Project Python-Jose.
How do I fix CVE-2016-7036?
Upgrade python-jose to 1.3.2 or later.
Is CVE-2016-7036 being exploited?
There is no known exploitation of CVE-2016-7036 in the wild and no public exploit code.
Other vulnerabilities in n/a
Sources
Also known as GHSA-w799-prg3-cx77, PYSEC-2017-28.