QID 981113

QID 981113: Python (pip) Security Update for cryptography (GHSA-fcf9-3qw3-gxmj)

A flaw was found in python-cryptography versions between >=1.9.0 and <2.3. The finalize_with_tag API did not enforce a minimum tag length. If a user did not validate the input length prior to passing it to finalize_with_tag an attacker could craft an invalid payload with a shortened tag (e.g. 1 byte) such that they would have a 1 in 256 chance of passing the MAC check. GCM tag forgeries can cause key leakage.

Successful exploitation of this vulnerability may affect the confidentiality, integrity, and availability of the targeted user.

CVSS V3 rated as High - 7.5 severity.

CVSS V2 rated as Medium - 5 severity.

Solution

Customers are advised to refer to GHSA-fcf9-3qw3-gxmj for updates pertaining to this vulnerability.

Vendor References

GHSA-fcf9-3qw3-gxmj - github.com/advisories/GHSA-fcf9-3qw3-gxmj

CVEs related to QID 981113

CVE-2018-10903 |

Software Advisories

Advisory ID	Software	Component	Link
GHSA-fcf9-3qw3-gxmj	cryptography		github.com/advisories/GHSA-fcf9-3qw3-gxmj

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