Debian Security Bug TrackerDEBIANCVE:CVE-2018-10903CVE-2018-10903
5 Medium
CVSS2
Attack Vector
NETWORK
Attack Complexity
LOW
Authentication
NONE
Confidentiality Impact
PARTIAL
Integrity Impact
NONE
Availability Impact
NONE
AV:N/AC:L/Au:N/C:P/I:N/A:N
7.5 High
CVSS3
Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
NONE
Availability Impact
NONE
CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
0.002 Low
EPSS
Percentile
55.3%
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.
| OS | Version | Architecture | Package | Version | Filename |
|---|---|---|---|---|---|
| Debian | 12 | all | python-cryptography | < 2.3-1 | python-cryptography_2.3-1_all.deb |
| Debian | 11 | all | python-cryptography | < 2.3-1 | python-cryptography_2.3-1_all.deb |
| Debian | 999 | all | python-cryptography | < 2.3-1 | python-cryptography_2.3-1_all.deb |
| Debian | 13 | all | python-cryptography | < 2.3-1 | python-cryptography_2.3-1_all.deb |
Related
5 Medium
CVSS2
Attack Vector
NETWORK
Attack Complexity
LOW
Authentication
NONE
Confidentiality Impact
PARTIAL
Integrity Impact
NONE
Availability Impact
NONE
AV:N/AC:L/Au:N/C:P/I:N/A:N
7.5 High
CVSS3
Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
NONE
Availability Impact
NONE
CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
0.002 Low
EPSS
Percentile
55.3%