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CVE-2023-4577— Memory corruption in JIT UpdateRegExpStatics

Quick assessment

Affected
Mozilla Firefox
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

Mozilla Firefox是美国Mozilla基金会的一款开源Web浏览器。 Mozilla Firefox 存在安全漏洞，该漏洞源于当UpdateRegExpStatics尝试访问时initialStringHeap，它可能在进入该函数之前就已被垃圾收集，这可能会导致可利用的崩溃。

AI Predicted 7.5 Difficulty: Moderate EPSS 0.65% · P50

Possible ATT&CK Techniques 1 AI

T1203 · Exploitation for Client Execution
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I. Basic Information for CVE-2023-4577

Vulnerability Information
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Vulnerability Title
Memory corruption in JIT UpdateRegExpStatics
Source: CVE Program / CVE List V5
Vulnerability Description
When `UpdateRegExpStatics` attempted to access `initialStringHeap` it could already have been garbage collected prior to entering the function, which could potentially have led to an exploitable crash. This vulnerability affects Firefox < 117, Firefox ESR < 115.2, and Thunderbird < 115.2.
Source: CVE Program / CVE List V5
CVSS Information
N/A
Source: CVE Program / CVE List V5
Vulnerability Type
N/A
Source: CVE Program / CVE List V5
Vulnerability Title
Mozilla Firefox 安全漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Mozilla Firefox是美国Mozilla基金会的一款开源Web浏览器。 Mozilla Firefox 存在安全漏洞，该漏洞源于当UpdateRegExpStatics尝试访问时initialStringHeap，它可能在进入该函数之前就已被垃圾收集，这可能会导致可利用的崩溃。
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
Mozilla Firefox unspecified ~ 117 -
Mozilla Firefox ESR unspecified ~ 115.2 -
Mozilla Thunderbird unspecified ~ 115.2 -

II. Public POCs for CVE-2023-4577

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III. Intelligence Information for CVE-2023-4577

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Vendor Advisories for CVE-2023-4577 (4)

Same Patch Batch · Mozilla · 2023-09-11 · 14 CVEs total

CVE-2023-4573 Memory corruption in IPC CanvasTranslator
CVE-2023-4574 Memory corruption in IPC ColorPickerShownCallback
CVE-2023-4575 Memory corruption in IPC FilePickerShownCallback
CVE-2023-4576 Integer Overflow in RecordedSourceSurfaceCreation
CVE-2023-4578 Error reporting methods in SpiderMonkey could have triggered an Out of Memory Exception
CVE-2023-4579 Persisted search terms were formatted as URLs
CVE-2023-4580 Push notifications saved to disk unencrypted
CVE-2023-4581 XLL file extensions were downloadable without warnings
CVE-2023-4582 Buffer Overflow in WebGL glGetProgramiv
CVE-2023-4583 Browsing Context potentially not cleared when closing Private Window
CVE-2023-4584 Memory safety bugs fixed in Firefox 117, Firefox ESR 102.15, Firefox ESR 115.2, Thunderbir
CVE-2023-4585 Memory safety bugs fixed in Firefox 117, Firefox ESR 115.2, and Thunderbird 115.2
CVE-2023-4104 Mozilla VPN 安全漏洞

IV. Related Vulnerabilities

Same product: Firefox
Same vendor: Mozilla

V. Comments for CVE-2023-4577

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