MEDIUM
Use-after-free vulnerability in WebKit, as used in Apple Safari before 5.0.5; iOS before 4.3.2 for iPhone, iPod, and iPad; iOS before 4.2.7 for iPhone 4 (CDMA); and possibly other products allows remote attackers to execute arbitrary code by adding children to a WBR tag and then removing the tag, related to text nodes, as demonstrated by Chaouki Bekrar during a Pwn2Own competition at CanSecWest 2011
Published Mar 10, 2011
6.8
MEDIUMCVSS 2.0
EPSS 5.92%
Description
Use-after-free vulnerability in WebKit, as used in Apple Safari before 5.0.5; iOS before 4.3.2 for iPhone, iPod, and iPad; iOS before 4.2.7 for iPhone 4 (CDMA); and possibly other products allows remote attackers to execute arbitrary code by adding children to a WBR tag and then removing the tag, related to text nodes, as demonstrated by Chaouki Bekrar during a Pwn2Own competition at CanSecWest 2011.
Affected products
No data.
Configuration 1
OR
- ≤ 5.0.4
- 1.0
- 1.0
- 1.0
- 1.0.0
- 1.0.0b1
- 1.0.0b2
- 1.0.1
- 1.0.2
- 1.0.3
- 1.0.3
- 1.0.3
- 1.1
- 1.1.0
- 1.1.1
- 1.2
- 1.2.0
- 1.2.1
- 1.2.2
- 1.2.3
- 1.2.4
- 1.2.5
- 1.3
- 1.3.0
- 1.3.1
- 1.3.2
- 1.3.2
- 1.3.2
- 2
- 2.0
- 2.0.0
- 2.0.1
- 2.0.2
- 2.0.3
- 2.0.3
- 2.0.3
- 2.0.3
- 2.0.3
- 2.0.4
- 3
- 3.0
- 3.0.0
- 3.0.0b
- 3.0.1
- 3.0.1b
- 3.0.2
- 3.0.2b
- 3.0.3
- 3.0.3b
- 3.0.4
- 3.0.4b
- 3.1.0
- 3.1.0b
- 3.1.1
- 3.1.2
- 3.2.0
- 3.2.1
- 3.2.2
- 4.0
- 4.0
- 4.0.0b
- 4.0.1
- 4.0.2
- 4.0.3
- 4.0.4
- 4.0.5
- 4.1
- 4.1.1
- 4.1.2
- 5.0
- 5.0.1
- 5.0.2
Configuration 2
AND
OR
- ≤ 4.3.1
- 1.0.0
- 1.0.1
- 1.0.2
- 1.1.0
- 1.1.1
- 1.1.2
- 1.1.3
- 1.1.4
- 1.1.5
- 2.0
- 2.0.0
- 2.0.1
- 2.0.2
- 2.1
- 2.1.1
- 2.2
- 2.2.1
- 3.0
- 3.0.1
- 3.1
- 3.1.2
- 3.1.3
- 3.2
- 3.2.1
- 4.0
- 4.0.1
- 4.0.2
- 4.1
- 4.2
- 4.2.1
- 4.2.5
- 4.2.8
- 4.3.0
Configuration 3
AND
OR
- ≤ 4.2.5
- 1.0.0
- 1.0.1
- 1.0.2
- 1.1.0
- 1.1.1
- 1.1.2
- 1.1.3
- 1.1.4
- 1.1.5
- 2.0
- 2.0.0
- 2.0.1
- 2.0.2
- 2.1
- 2.1.1
- 2.2
- 2.2.1
- 3.0
- 3.0.1
- 3.1
- 3.1.2
- 3.1.3
- 3.2
- 3.2.1
- 3.2.2
- 4.0
- 4.0.1
- 4.0.2
- 4.1
- 4.2
- 4.2.1
No data.
No Red Hat product state for this CVE.
No package ranges for this CVE.
Remediation
No remediation recorded yet.
Metrics
No CVSS v4.0 score for this CVE.
No CVSS v3.1 score for this CVE.
No CVSS v3.0 score for this CVE.
6.8 MEDIUM NVD
AV:N/AC:M/Au:N/C:P/I:P/A:P
Access Vector Network
Access Complexity Medium
Authentication None
Confidentiality Impact Partial
Integrity Impact Partial
Availability Impact Partial
This CVE is not in the KEV list.
No CISA SSVC assessment for this CVE yet.
5.92% 0.05916
Estimated probability of exploitation in the wild in the next 30 days (FIRST EPSS). As of Oct 1, 2026.
EPSS probability 0.05916
Score over time
2022–2026- EPSS v2
- EPSS v3
- EPSS v4
- EPSS v5
Percentile over time
- EPSS v2
- EPSS v3
- EPSS v4
- EPSS v5
Table of values (13 key points)
Flat stretches are collapsed; showing up to 120 newest points.
| Date | Score | Percentile | Model |
|---|---|---|---|
| Oct 1, 2026 | 5.92% (0.05916) | 93.02th | v5 (v2026.06.15) |
| Jun 15, 2026 | 5.92% (0.05916) | 92.27th | v5 (v2026.06.15) |
| Nov 5, 2025 | 5.32% (0.05324) | 89.58th | v4 (v2025.03.14) |
| Mar 30, 2025 | 3.99% (0.03992) | 87.34th | v4 (v2025.03.14) |
| Mar 29, 2025 | 7.87% (0.07872) | 86.41th | v4 (v2025.03.14) |
| Mar 17, 2025 | 4.31% (0.04310) | 88.13th | v4 (v2025.03.14) |
| Dec 12, 2024 | 4.32% (0.04316) | 92.63th | v3 (v2023.03.01) |
| Mar 26, 2024 | 4.32% (0.04316) | 92.13th | v3 (v2023.03.01) |
| Feb 6, 2024 | 4.41% (0.04409) | 91.59th | v3 (v2023.03.01) |
| Mar 7, 2023 | 4.05% (0.04046) | 90.73th | v3 (v2023.03.01) |
| Mar 6, 2023 | 9.17% (0.09174) | 94.20th | v2 (v2022.01.01) |
| Apr 1, 2022 | 9.17% (0.09174) | 93.66th | v2 (v2022.01.01) |
| Feb 4, 2022 | 9.17% (0.09174) | 86.96th | v2 (v2022.01.01) |
Weaknesses (1)
References (18)
- http://dvlabs.tippingpoint.com/blog/2011/02/02/pwn2own-2011 x_refsource_MISC
- http://lists.apple.com/archives/security-announce/2011//Apr/msg00000.html vendor-advisoryx_refsource_APPLE
- http://lists.apple.com/archives/security-announce/2011//Apr/msg00001.html vendor-advisoryx_refsource_APPLE
- http://lists.apple.com/archives/security-announce/2011//Apr/msg00002.html vendor-advisoryx_refsource_APPLE
- http://secunia.com/advisories/44151 third-party-advisoryx_refsource_SECUNIA
- http://secunia.com/advisories/44154 third-party-advisoryx_refsource_SECUNIA
- http://support.apple.com/kb/HT4596 x_refsource_CONFIRM
- http://support.apple.com/kb/HT4607 x_refsource_CONFIRM
- http://twitter.com/aaronportnoy/statuses/45632544967901187 x_refsource_MISC
- http://www.computerworld.com/s/article/9214002/Safari_IE_hacked_first_at_Pwn2Own x_refsource_MISC
- http://www.securityfocus.com/archive/1/517505/100/0/threaded mailing-listx_refsource_BUGTRAQ
- http://www.securityfocus.com/archive/1/517517/100/0/threaded mailing-listx_refsource_BUGTRAQ
- http://www.securityfocus.com/bid/46822 vdb-entryx_refsource_BID
- http://www.securitytracker.com/id?1025363 vdb-entryx_refsource_SECTRACK
- http://www.vupen.com/english/advisories/2011/0984 vdb-entryx_refsource_VUPEN
- http://www.zdnet.com/blog/security/safarimacbook-first-to-fall-at-pwn2own-2011/8358 x_refsource_MISC
- http://www.zerodayinitiative.com/advisories/ZDI-11-135 x_refsource_MISC
- https://exchange.xforce.ibmcloud.com/vulnerabilities/66061 vdb-entryx_refsource_XF
Change history (0)
No recorded changes yet.
Sources
CVE.org / MITRE
Status PUBLISHED
Assigner mitre
Published Mar 10, 2011
Updated Aug 6, 2024
Reserved Mar 10, 2011
Link CVE-2011-1344
CISA Vulnrichment
Updated n/a