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vulnrichmentGoogleVULNRICHMENT:CVE-2023-1999
HistoryJun 20, 2023 - 11:28 a.m.

CVE-2023-1999 Use after free in libwebp

2023-06-2011:28:52
CWE-416
Google
github.com
cve-2023-1999
libwebp
use after free

CVSS3

5.3

Attack Vector

NETWORK

Attack Complexity

HIGH

Privileges Required

LOW

User Interaction

NONE

Scope

UNCHANGED

Confidentiality Impact

HIGH

Integrity Impact

NONE

Availability Impact

NONE

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

AI Score

7

Confidence

Low

SSVC

Exploitation

none

Automatable

no

Technical Impact

partial

There exists a use after free/double free in libwebp. An attacker can use theย ApplyFiltersAndEncode() function and loop through to free best.bw and assign best = trial pointer. The second loop will then return 0 because of an Out of memory error in VP8 encoder, the pointer is still assigned to trial and the AddressSanitizer will attempt a double free.

CVSS3

5.3

Attack Vector

NETWORK

Attack Complexity

HIGH

Privileges Required

LOW

User Interaction

NONE

Scope

UNCHANGED

Confidentiality Impact

HIGH

Integrity Impact

NONE

Availability Impact

NONE

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

AI Score

7

Confidence

Low

SSVC

Exploitation

none

Automatable

no

Technical Impact

partial