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veracodeVeracode Vulnerability DatabaseVERACODE:43017
HistoryAug 30, 2023 - 10:30 p.m.

Timing Attack

2023-08-3022:30:54
Veracode Vulnerability Database
sca.analysiscenter.veracode.com
17
python3.9
improper access control
hmac.py
timing attack
cryptographic applications
software

CVSS3

5.9

Attack Vector

NETWORK

Attack Complexity

HIGH

Privileges Required

NONE

User Interaction

NONE

Scope

UNCHANGED

Confidentiality Impact

HIGH

Integrity Impact

NONE

Availability Impact

NONE

CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:N

EPSS

0.001

Percentile

23.7%

python3.9 is vulnerable to Improper Access Control. The vulnerability exists due to a flaw in the way the hmac.compare_digest() function in the Lib/hmac.py module compares two message digests. An attacker can exploit this vulnerability to distinguish between different message digests, which could be used to defeat certain cryptographic applications.

CVSS3

5.9

Attack Vector

NETWORK

Attack Complexity

HIGH

Privileges Required

NONE

User Interaction

NONE

Scope

UNCHANGED

Confidentiality Impact

HIGH

Integrity Impact

NONE

Availability Impact

NONE

CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:N

EPSS

0.001

Percentile

23.7%