libcurl GnuTLS weak security
| libcurl-gnutls-weak-security (35479) |  Low Risk |
Description:
libcurl could provide weaker than expected security. The GnuTLS certificate implementation used by libcurl does not properly verify certificates. If libcurl is built to use GnuTLS, an authenticated remote attacker could exploit this vulnerability to bypass security restrictions.
Note: Applications implementing libcurl are also affected by this vulnerability
Platforms Affected:
- Canonical, Ubuntu 6.06 LTS
- Canonical, Ubuntu 6.10
- Canonical, Ubuntu 7.04
- cURL, libcurl prior to 7.16.4
- Debian, Debian Linux 4.0
Remedy:
Refer to cURL Security Advisory (July 10, 2007) for patch, upgrade, or suggested workaround information. See References.
For Ubuntu Linux:
Refer to USN-484-1 for patch, upgrade, or suggested workaround information. See References.
For Debian GNU/Linux (libcurl3-gnutls):
Refer to DSA-1333-1 for patch, upgrade, or suggested workaround information. See References.
For other distributions:
Contact your vendor for upgrade or patch information.
Consequences:
Bypass Security
References:
- cURL Security Advisory (July 10, 2007), libcurl GnuTLS insufficient cert verification Vulnerability at http://curl.haxx.se/docs/adv_20070710.html.
- BID-24938: Curl GnuTLS Certificate Verfication Access Validation Vulnerability
- CVE-2007-3564: libcurl 7.14.0 through 7.16.3, when built with GnuTLS support, does not check SSL/TLS certificate expiration or activation dates, which allows remote attackers to bypass certain access restrictions.
- DSA-1333: libcurl3-gnutls -- missing input validation
- SA26104: cURL/libcURL GnuTLS Security Issue
- USN-484-1: curl vulnerability
- VUPEN/ADV-2007-2551: cURL GnuTLS Certificate Verification Methods Security Bypass Weakness
Reported:
Jul 10, 2007
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