cve-2018-10903
Vulnerability from cvelistv5
Published
2018-07-30 15:00
Modified
2024-08-05 07:54
Severity ?
7.5 (High) - CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
Summary
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.
References
secalert@redhat.comhttps://access.redhat.com/errata/RHSA-2018:3600
secalert@redhat.comhttps://bugzilla.redhat.com/show_bug.cgi?id=CVE-2018-10903Issue Tracking, Patch, Third Party Advisory
secalert@redhat.comhttps://github.com/pyca/cryptography/pull/4342/commits/688e0f673bfbf43fa898994326c6877f00ab19efPatch, Third Party Advisory
secalert@redhat.comhttps://usn.ubuntu.com/3720-1/Third Party Advisory
af854a3a-2127-422b-91ae-364da2661108https://access.redhat.com/errata/RHSA-2018:3600
af854a3a-2127-422b-91ae-364da2661108https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2018-10903Issue Tracking, Patch, Third Party Advisory
af854a3a-2127-422b-91ae-364da2661108https://github.com/pyca/cryptography/pull/4342/commits/688e0f673bfbf43fa898994326c6877f00ab19efPatch, Third Party Advisory
af854a3a-2127-422b-91ae-364da2661108https://usn.ubuntu.com/3720-1/Third Party Advisory
Impacted products
Vendor Product Version
Show details on NVD website

To clipboard 

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