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CVE-2023-1999— Use after free in libwebp

Quick assessment

Affected
Chromium libwebp
Exploitation
Public or AI PoC available; prioritize validation
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

libwebp是一个WebP图像格式的编码和解码库。 libwebp存在安全漏洞，该漏洞源于VP8编码器内存不足，从而导致内存释放后重用。

CVSS 5.3 · Medium EPSS 0.95% · P60

Possible ATT&CK Techniques 1 AI

T1203 · Exploitation for Client Execution
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I. Basic Information for CVE-2023-1999

Vulnerability Information
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Vulnerability Title
Use after free in libwebp
Source: CVE Program / CVE List V5
Vulnerability Description
There exists a use after free/double free in libwebp. An attacker can use the 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.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:H/I:N/A:N
Source: CVE Program / CVE List V5
Vulnerability Type
释放后使用
Source: CVE Program / CVE List V5
Vulnerability Title
libwebp 资源管理错误漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
libwebp是一个WebP图像格式的编码和解码库。 libwebp存在安全漏洞，该漏洞源于VP8编码器内存不足，从而导致内存释放后重用。
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)

Affected Products

Vendor Product Affected Versions CPE Subscribe
Chromium libwebp 0.4.2 ~ 1.3.1 -

II. Public POCs for CVE-2023-1999

# POC Description Source Link Shenlong Link
1 None https://github.com/Pazhanivelmani/webp_Android10_r33_CVE-2023-1999 POC Details
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III. Intelligence Information for CVE-2023-1999

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Vendor Advisories for CVE-2023-1999 (1)

Other References for CVE-2023-1999 (1)

IV. Related Vulnerabilities

Same product: libwebp
Same vendor: Chromium
Same weakness: CWE-416

V. Comments for CVE-2023-1999

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