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Vulnerability record · CVE-2011-1344 · published 10 March 2011

CVE-2011-1344: Apple safari vulnerability

Apple · Safari

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.

6.8 CVSS 2.0 Medium EPSS 5.9% · top 7.0% CWE-399 · CWE-399
6.8CVSS 2.0 base score
5.9%EPSS exploitation probability, 30 days
NoNot in CISA KEV
2Affected product versions listed by NVD
36References
16 Jun 2026Last modified by NVD

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.

AV:N/AC:M/Au:N/C:P/I:P/A:P

Affected products

2 vulnerable configurations from NVD's CPE data, grouped by vendor and product.

References

LinkTags
http://dvlabs.tippingpoint.com/blog/2011/02/02/pwn2own-2011
http://lists.apple.com/archives/security-announce/2011//Apr/msg00000.html
http://lists.apple.com/archives/security-announce/2011//Apr/msg00001.html
http://lists.apple.com/archives/security-announce/2011//Apr/msg00002.html
http://secunia.com/advisories/44151
http://secunia.com/advisories/44154
http://support.apple.com/kb/HT4596
http://support.apple.com/kb/HT4607
http://twitter.com/aaronportnoy/statuses/45632544967901187
http://www.computerworld.com/s/article/9214002/Safari_IE_hacked_first_at_Pwn2Own
http://www.securityfocus.com/archive/1/517505/100/0/threaded
http://www.securityfocus.com/archive/1/517517/100/0/threaded
http://www.securityfocus.com/bid/46822
http://www.securitytracker.com/id?1025363
http://www.vupen.com/english/advisories/2011/0984
http://www.zdnet.com/blog/security/safarimacbook-first-to-fall-at-pwn2own-2011/8358
http://www.zerodayinitiative.com/advisories/ZDI-11-135
https://exchange.xforce.ibmcloud.com/vulnerabilities/66061
http://dvlabs.tippingpoint.com/blog/2011/02/02/pwn2own-2011
http://lists.apple.com/archives/security-announce/2011//Apr/msg00000.html
http://lists.apple.com/archives/security-announce/2011//Apr/msg00001.html
http://lists.apple.com/archives/security-announce/2011//Apr/msg00002.html
http://secunia.com/advisories/44151
http://secunia.com/advisories/44154
http://support.apple.com/kb/HT4596
http://support.apple.com/kb/HT4607
http://twitter.com/aaronportnoy/statuses/45632544967901187
http://www.computerworld.com/s/article/9214002/Safari_IE_hacked_first_at_Pwn2Own
http://www.securityfocus.com/archive/1/517505/100/0/threaded
http://www.securityfocus.com/archive/1/517517/100/0/threaded
http://www.securityfocus.com/bid/46822
http://www.securitytracker.com/id?1025363
http://www.vupen.com/english/advisories/2011/0984
http://www.zdnet.com/blog/security/safarimacbook-first-to-fall-at-pwn2own-2011/8358
http://www.zerodayinitiative.com/advisories/ZDI-11-135
https://exchange.xforce.ibmcloud.com/vulnerabilities/66061

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Related vulnerabilities

Same products first, then exploited flaws of the same weakness class.

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Source: NIST National Vulnerability Database (record CVE-2011-1344), CISA KEV, FIRST EPSS (scores of 2026-09-27). This page is refreshed as NVD updates the record.