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freebsdFreeBSDA28E8B7E-FC70-11EC-856E-D4C9EF517024
HistoryJul 05, 2022 - 12:00 a.m.

OpenSSL -- AES OCB fails to encrypt some bytes

2022-07-0500:00:00
vuxml.freebsd.org
61

5.3 Medium

CVSS3

Attack Vector

NETWORK

Attack Complexity

LOW

Privileges Required

NONE

User Interaction

NONE

Scope

UNCHANGED

Confidentiality Impact

LOW

Integrity Impact

NONE

Availability Impact

NONE

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

5 Medium

CVSS2

Access Vector

NETWORK

Access 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

0.004 Low

EPSS

Percentile

72.1%

The OpenSSL project reports:

AES OCB mode for 32-bit x86 platforms using the AES-NI assembly optimised
implementation will not encrypt the entirety of the data under some
circumstances. This could reveal sixteen bytes of data that was
preexisting in the memory that wasnโ€™t written. In the special case of
โ€œin placeโ€ encryption, sixteen bytes of the plaintext would be revealed.

OSVersionArchitecturePackageVersionFilename
FreeBSDanynoarchopenssl<ย 1.1.1q,1UNKNOWN
FreeBSDanynoarchopenssl-devel<ย 3.0.5UNKNOWN

5.3 Medium

CVSS3

Attack Vector

NETWORK

Attack Complexity

LOW

Privileges Required

NONE

User Interaction

NONE

Scope

UNCHANGED

Confidentiality Impact

LOW

Integrity Impact

NONE

Availability Impact

NONE

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

5 Medium

CVSS2

Access Vector

NETWORK

Access 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

0.004 Low

EPSS

Percentile

72.1%