CVE-2021-30934
A buffer overflow issue was addressed with improved memory handling. This issue is fixed in tvOS 15.2, macOS Monterey 12.1, Safari 15.2, iOS 15.2 and iPadOS 15.2, watchOS 8.3. Processing maliciously
02 Description
A buffer overflow issue was addressed with improved memory handling. This issue is fixed in tvOS 15.2, macOS Monterey 12.1, Safari 15.2, iOS 15.2 and iPadOS 15.2, watchOS 8.3. Processing maliciously
03 Exploitation and scoring
- Exploitation
- Not assessed. CISA has not published an exploitation assessment for this record, and it is not in the KEV catalog. That is an absence of assessment, not a finding of no risk.
- SSVC decision
- Not assessed by CISA
- EPSS probability
- 2.64% probability of exploitation activity in the next 30 days.
- EPSS percentile
- Equal to or higher than the score of 85.1% of scored records. A rank, not a probability.
- NVD base score
- 8.8 (CVSS v3.x), scored by the NVD independently of the CNA.
- NVD CVSS vector
- CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
- NVD analysis status
- Modified. NVD last modified this record on 2026-06-17.
- Red Hat severity
- Moderate. Red Hat's rating for its own products, not a CVSS rating.
Exploit-prediction scores from FIRST. Independent scoring and analysis status from the NVD. Vendor severity from Red Hat. Exploitation assessment and catalog membership from CISA.
04 Metadata
- Published
- 2021-08-24 18:50Z5 YR AGO
- Last updated
- 2024-08-03 22:48Z2 YR AGO
- Reserved
- 2021-04-13
- Assigning CNA
- apple
- Record state
- PUBLISHED
- Severity
- Not rated by the issuing CNA
- CNA CVSS vector
- Not published by the issuing CNA
- Weaknesses
- CWE-120Buffer Copy without Checking Size of Input ('Classic Buffer Overflow')Base
- Data version
- 5.1
- Document digest
- 7efd6ae43edc16862e176aada29c881ced5690bee4bdfbbbcc37d6ef98910b27
05 Affected products
06 References
- support.apple.comhttps://support.apple.com/en-us/HT212975
- support.apple.comhttps://support.apple.com/en-us/HT212976
- support.apple.comhttps://support.apple.com/en-us/HT212978
- support.apple.comhttps://support.apple.com/en-us/HT212980
- support.apple.comhttps://support.apple.com/en-us/HT212982
- www.openwall.com[oss-security] 20220121 WebKitGTK and WPE WebKit Security Advisory WSA-2022-0001http://www.openwall.com/lists/oss-security/2022/01/21/2
- lists.fedoraproject.orgFEDORA-2022-25a98f5d55https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/7EQVZ3CEMTINLBZ7PBC7WRXVEVCRHNSM/
- www.debian.orgDSA-5061https://www.debian.org/security/2022/dsa-5061
- www.debian.orgDSA-5060https://www.debian.org/security/2022/dsa-5060
- lists.fedoraproject.orgFEDORA-2022-f7366e60cbhttps://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/HQKWD4BXRDD2YGR5AVU7H5J5PIQIEU6V/
07 Fixed in
AlmaLinux 8
- webkit2gtk3 Fixed in 2.34.6-1.el8
- webkit2gtk3-devel Fixed in 2.34.6-1.el8
- webkit2gtk3-jsc Fixed in 2.34.6-1.el8
- webkit2gtk3-jsc-devel Fixed in 2.34.6-1.el8
Source: AlmaLinux, AlmaLinux OS. Copyright (c) 2023 AlmaLinux OS. Licensed under MIT License. Received through OSV.dev. Reformatted by exploit.cc.
CloudLinux 8
- webkit2gtk3 Fixed in 2.34.6-1.el8
- webkit2gtk3-devel Fixed in 2.34.6-1.el8
- webkit2gtk3-jsc Fixed in 2.34.6-1.el8
- webkit2gtk3-jsc-devel Fixed in 2.34.6-1.el8
Derived from AlmaLinux 8. Partial coverage: only packages taken from AlmaLinux 8 are listed.
Source: CloudLinux errata, CloudLinux Inc. Derived from: AlmaLinux, AlmaLinux OS. Copyright (c) 2023 AlmaLinux OS. Licensed under MIT License. Received through OSV.dev. Reformatted by exploit.cc.
Debian 12
- webkit2gtk Fixed in 2.34.4-1
- wpewebkit Fixed in 2.34.4-1
Source: Debian Security Tracker, the Debian security team. Received through OSV.dev. Reformatted by exploit.cc.
Debian 13
- webkit2gtk Fixed in 2.34.4-1
- wpewebkit Fixed in 2.34.4-1
Source: Debian Security Tracker, the Debian security team. Received through OSV.dev. Reformatted by exploit.cc.
Debian 14
- webkit2gtk Fixed in 2.34.4-1
- wpewebkit Fixed in 2.34.4-1
Source: Debian Security Tracker, the Debian security team. Received through OSV.dev. Reformatted by exploit.cc.
Ubuntu 16.04 LTS
- qtwebkit-opensource-src No fix yet
- qtwebkit-source No fix yet
- webkit2gtk No fix yet
- webkitgtk No fix yet
Source: Ubuntu, Canonical Ltd. Licensed under CC BY-SA 4.0. Received through OSV.dev. Reformatted by exploit.cc.
Ubuntu 18.04 LTS
- qtwebkit-opensource-src No fix yet
- qtwebkit-source No fix yet
- webkit2gtk No fix yet
- webkitgtk No fix yet
Source: Ubuntu, Canonical Ltd. Licensed under CC BY-SA 4.0. Received through OSV.dev. Reformatted by exploit.cc.
Ubuntu 20.04 LTS
- qtwebkit-opensource-src No fix yet
- webkit2gtk Fixed in 2.34.4-0ubuntu0.20.04.1
- wpewebkit No fix yet
Source: Ubuntu, Canonical Ltd. Licensed under CC BY-SA 4.0. Received through OSV.dev. Reformatted by exploit.cc.
Ubuntu 22.04 LTS
- qtwebkit-opensource-src No fix yet
- wpewebkit No fix yet
Source: Ubuntu, Canonical Ltd. Licensed under CC BY-SA 4.0. Received through OSV.dev. Reformatted by exploit.cc.
Ubuntu 24.04 LTS
- qtwebkit-opensource-src No fix yet
Source: Ubuntu, Canonical Ltd. Licensed under CC BY-SA 4.0. Received through OSV.dev. Reformatted by exploit.cc.
A release or ecosystem missing from this list has no record here. It may be unaffected or not covered by the source. Source notices and licences.