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alpinelinuxAlpine Linux Development TeamALPINE:CVE-2023-1999
HistoryJun 20, 2023 - 12:15 p.m.

CVE-2023-1999

2023-06-2012:15:09
Alpine Linux Development Team
security.alpinelinux.org
18
cve-2023-1999
libwebp
memory error
addresssanitizer
vp8 encoder
unix

7.5 High

CVSS3

Attack Vector

NETWORK

Attack Complexity

LOW

Privileges Required

NONE

User Interaction

NONE

Scope

UNCHANGED

Confidentiality Impact

NONE

Integrity Impact

NONE

Availability Impact

HIGH

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

8 High

AI Score

Confidence

High

0.001 Low

EPSS

Percentile

44.7%

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.

7.5 High

CVSS3

Attack Vector

NETWORK

Attack Complexity

LOW

Privileges Required

NONE

User Interaction

NONE

Scope

UNCHANGED

Confidentiality Impact

NONE

Integrity Impact

NONE

Availability Impact

HIGH

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

8 High

AI Score

Confidence

High

0.001 Low

EPSS

Percentile

44.7%