CVE-2015-7764 json
Lemur uses static IV per key
published 2017-08-09 9 y ago modified 2026-09-10 1 mo ago also GHSA-chg9-3c3p-ch23 , PYSEC-2017-50 , EUVD-2017-0069
- cvss
- 7.5
- version 3.1, NVD
- cisa kev
- Not listed
- not in CISA's catalog
- epss
- 1.5%
- EPSS 1.5% chance of exploitation in 30 days, percentile 74%
- public exploits
- 0
- none known
Summary
Lemur 0.1.4 does not use sufficient entropy in its IV when encrypting AES in CBC mode.
Patch / fix
Exploit prediction
1.51% chance of exploitation in the next 30 days, higher than 74% of all scored CVEs (FIRST EPSS, 2026-11-09).
CVSS scores
| assigned by | version | score | vector |
|---|---|---|---|
| NVD | 3.1 | 7.5 | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N |
| NVD | 2.0 | 5.0 | AV:N/AC:L/Au:N/C:P/I:N/A:N |
| GitHub | 3.1 | 7.5 | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N |
Affected packages
| ecosystem | package | affected | fixed in |
|---|---|---|---|
| pypi | lemur | <0.1.5 <0.2.1 |
0.1.5 0.2.1 |
Classification
- Weakness
-
- CWE-331 Insufficient Entropy
References
-
github.com
/Netflix/lemur/commit/394e18f76e5eb534d95160945ebc231ec3b4c794
web
-
github.com
/Netflix/lemur/issues/117
web, third-party-advisory, report
-
openwall.com
/lists/oss-security/2015/10/20/3
mailing-list, web, third-party-advisory
-
github.com
/kvesteri/sqlalchemy-utils/issues/166
web, third-party-advisory, report
-
nvd.nist.gov
/vuln/detail/CVE-2015-7764
advisory
-
github.com
/Netflix/lemur
package
-
github.com
/pypa/advisory-database/tree/main/vulns/lemur/PYSEC-2017-50.yaml
web
-
github.com
/advisories/GHSA-chg9-3c3p-ch23
advisory
Sources
- CVE List CVE-2015-7764
- GitHub Advisory GHSA-chg9-3c3p-ch23
- NVD CVE-2015-7764
- OSV PYSEC-2017-50
Fencer Intel keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.