Apple · iOS, iPadOS, and macOS
CVE-2021-30858
Apple iOS, iPadOS, macOS Use-After-Free Vulnerability
De quoi s'agit-il
A use after free issue was addressed with improved memory management. This issue is fixed in iOS 14.8 and iPadOS 14.8, macOS Big Sur 11.6. Processing maliciously crafted web content may lead to arbitrary code execution. Apple is aware of a report that this issue may have been actively exploited.
CISA: Apple iOS, iPadOS, and macOS WebKit contain a use-after-free vulnerability that leads to code execution when processing maliciously crafted web content. This vulnerability could impact HTML parsers that use WebKit, including but not limited to Apple Safari and non-Apple products which rely on WebKit for HTML processing.
Que faire
Apply updates per vendor instructions.
Échéance pour les agences fédérales américaines : 17 novembre 2021
- Ajoutée à la liste de la CISA
- 3 novembre 2021
- Publiée
- 24 août 2021
- Gravité
- Élevé 8,8 CVSS 3.1
- Probabilité d'attaques dans les 30 prochains jours (EPSS)
- 13% dans les 3,6% les plus à risque de toutes les failles connues
- Faiblesse
- CWE-416
- Plus de détails
- NVD · CVE.org · CISA
Toutes les références (18)
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/BO6DMTHZR57J…
- https://www.debian.org/security/2021/dsa-4975
- https://www.debian.org/security/2021/dsa-4976
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/XYNV7ASK4LQV…
- https://support.apple.com/en-us/HT212804
- https://support.apple.com/en-us/HT212807
- http://seclists.org/fulldisclosure/2021/Sep/27
- http://seclists.org/fulldisclosure/2021/Sep/25
- http://seclists.org/fulldisclosure/2021/Sep/29
- http://www.openwall.com/lists/oss-security/2021/09/20/1
- http://seclists.org/fulldisclosure/2021/Sep/38
- http://seclists.org/fulldisclosure/2021/Sep/39
- https://support.apple.com/kb/HT212824
- http://seclists.org/fulldisclosure/2021/Sep/50
- http://www.openwall.com/lists/oss-security/2021/10/26/9
- http://www.openwall.com/lists/oss-security/2021/10/27/1
- http://www.openwall.com/lists/oss-security/2021/10/27/2
- http://www.openwall.com/lists/oss-security/2021/10/27/4
Autres failles exploitées chez Apple
| Ajouté | Faille | Produit | Gravité | Risque d'attaque |
|---|---|---|---|---|
| 21 août 2025 | Out-of-Bounds Write | iOS, iPadOS, and macOS | Critique 10,0 | 65% |
| 11 sept. 2023 | ImageIO Buffer Overflow | iOS, iPadOS, and macOS | Élevé 7,8 | 53% |
| 10 avr. 2023 | IOSurfaceAccelerator Out-of-Bounds Write | iOS, iPadOS, and macOS | Élevé 8,6 | 23% |
| 30 mars 2023 | Out-of-Bounds Write | iOS, iPadOS, and macOS | Élevé 7,8 | 5,2% |
| 14 sept. 2022 | Remote Code Execution | iOS, iPadOS, and macOS | Élevé 7,8 | 5,6% |
| 8 sept. 2022 | Input Validation | iOS, iPadOS, and macOS | Moyenne 5,5 | 3,2% |
| 11 févr. 2022 | Webkit Use-After-Free | iOS, iPadOS, and macOS | Élevé 8,8 | 16% |
| 3 nov. 2021 | WebKit Remote Code Execution | iOS, iPadOS, and macOS | Critique 9,8 | 7,7% |
Sources : Known Exploited Vulnerabilities (CISA, domaine public), CVE records (cve.org) et EPSS (FIRST). Le risque d'attaque est l'estimation EPSS qu'une personne tente d'exploiter la faille dans les 30 prochains jours.