Debian Security Advisory

DSA-1869-1 curl -- insufficient input validation

Date Reported:

19 Aug 2009

Affected Packages:

curl

Vulnerable:

Yes

Security database references:

In the Debian bugtracking system: Bug 541991.
In Mitre's CVE dictionary: CVE-2009-2417.

More information:

It was discovered that curl, a client and library to get files from servers using HTTP, HTTPS or FTP, is vulnerable to the "Null Prefix Attacks Against SSL/TLS Certificates" recently published at the Blackhat conference. This allows an attacker to perform undetected man-in-the-middle attacks via a crafted ITU-T X.509 certificate with an injected null byte in the Common Name field.

For the oldstable distribution (etch), this problem has been fixed in version 7.15.5-1etch3.

For the stable distribution (lenny), this problem has been fixed in version 7.18.2-8lenny3.

For the testing (squeeze) and unstable (sid) distribution, this problem will be fixed soon.

We recommend that you upgrade your curl packages.

Fixed in:

Debian GNU/Linux 4.0 (etch)

Source:: http://security.debian.org/pool/updates/main/c/curl/curl_7.15.5-1etch3.diff.gz; http://security.debian.org/pool/updates/main/c/curl/curl_7.15.5.orig.tar.gz; http://security.debian.org/pool/updates/main/c/curl/curl_7.15.5-1etch3.dsc
Architecture-independent component:: http://security.debian.org/pool/updates/main/c/curl/libcurl3-dev_7.15.5-1etch3_all.deb
Alpha:: http://security.debian.org/pool/updates/main/c/curl/libcurl3-openssl-dev_7.15.5-1etch3_alpha.deb; http://security.debian.org/pool/updates/main/c/curl/libcurl3-dbg_7.15.5-1etch3_alpha.deb; http://security.debian.org/pool/updates/main/c/curl/libcurl3_7.15.5-1etch3_alpha.deb; http://security.debian.org/pool/updates/main/c/curl/libcurl3-gnutls-dev_7.15.5-1etch3_alpha.deb; http://security.debian.org/pool/updates/main/c/curl/curl_7.15.5-1etch3_alpha.deb; http://security.debian.org/pool/updates/main/c/curl/libcurl3-gnutls_7.15.5-1etch3_alpha.deb
AMD64:: http://security.debian.org/pool/updates/main/c/curl/curl_7.15.5-1etch3_amd64.deb; http://security.debian.org/pool/updates/main/c/curl/libcurl3-openssl-dev_7.15.5-1etch3_amd64.deb; http://security.debian.org/pool/updates/main/c/curl/libcurl3-dbg_7.15.5-1etch3_amd64.deb; http://security.debian.org/pool/updates/main/c/curl/libcurl3-gnutls-dev_7.15.5-1etch3_amd64.deb; http://security.debian.org/pool/updates/main/c/curl/libcurl3_7.15.5-1etch3_amd64.deb; http://security.debian.org/pool/updates/main/c/curl/libcurl3-gnutls_7.15.5-1etch3_amd64.deb
ARM:: http://security.debian.org/pool/updates/main/c/curl/libcurl3-dbg_7.15.5-1etch3_arm.deb; http://security.debian.org/pool/updates/main/c/curl/libcurl3-gnutls-dev_7.15.5-1etch3_arm.deb; http://security.debian.org/pool/updates/main/c/curl/libcurl3-gnutls_7.15.5-1etch3_arm.deb; http://security.debian.org/pool/updates/main/c/curl/curl_7.15.5-1etch3_arm.deb; http://security.debian.org/pool/updates/main/c/curl/libcurl3-openssl-dev_7.15.5-1etch3_arm.deb; http://security.debian.org/pool/updates/main/c/curl/libcurl3_7.15.5-1etch3_arm.deb
HP Precision:: http://security.debian.org/pool/updates/main/c/curl/libcurl3-gnutls_7.15.5-1etch3_hppa.deb; http://security.debian.org/pool/updates/main/c/curl/libcurl3-gnutls-dev_7.15.5-1etch3_hppa.deb; http://security.debian.org/pool/updates/main/c/curl/libcurl3-dbg_7.15.5-1etch3_hppa.deb; http://security.debian.org/pool/updates/main/c/curl/libcurl3-openssl-dev_7.15.5-1etch3_hppa.deb; http://security.debian.org/pool/updates/main/c/curl/curl_7.15.5-1etch3_hppa.deb; http://security.debian.org/pool/updates/main/c/curl/libcurl3_7.15.5-1etch3_hppa.deb
Intel IA-32:: http://security.debian.org/pool/updates/main/c/curl/libcurl3_7.15.5-1etch3_i386.deb; http://security.debian.org/pool/updates/main/c/curl/curl_7.15.5-1etch3_i386.deb; http://security.debian.org/pool/updates/main/c/curl/libcurl3-dbg_7.15.5-1etch3_i386.deb; http://security.debian.org/pool/updates/main/c/curl/libcurl3-gnutls-dev_7.15.5-1etch3_i386.deb; http://security.debian.org/pool/updates/main/c/curl/libcurl3-openssl-dev_7.15.5-1etch3_i386.deb; http://security.debian.org/pool/updates/main/c/curl/libcurl3-gnutls_7.15.5-1etch3_i386.deb
Intel IA-64:: http://security.debian.org/pool/updates/main/c/curl/libcurl3_7.15.5-1etch3_ia64.deb; http://security.debian.org/pool/updates/main/c/curl/curl_7.15.5-1etch3_ia64.deb; http://security.debian.org/pool/updates/main/c/curl/libcurl3-gnutls_7.15.5-1etch3_ia64.deb; http://security.debian.org/pool/updates/main/c/curl/libcurl3-dbg_7.15.5-1etch3_ia64.deb; http://security.debian.org/pool/updates/main/c/curl/libcurl3-openssl-dev_7.15.5-1etch3_ia64.deb; http://security.debian.org/pool/updates/main/c/curl/libcurl3-gnutls-dev_7.15.5-1etch3_ia64.deb
Big-endian MIPS:: http://security.debian.org/pool/updates/main/c/curl/curl_7.15.5-1etch3_mips.deb; http://security.debian.org/pool/updates/main/c/curl/libcurl3_7.15.5-1etch3_mips.deb; http://security.debian.org/pool/updates/main/c/curl/libcurl3-dbg_7.15.5-1etch3_mips.deb; http://security.debian.org/pool/updates/main/c/curl/libcurl3-gnutls_7.15.5-1etch3_mips.deb; http://security.debian.org/pool/updates/main/c/curl/libcurl3-gnutls-dev_7.15.5-1etch3_mips.deb; http://security.debian.org/pool/updates/main/c/curl/libcurl3-openssl-dev_7.15.5-1etch3_mips.deb
PowerPC:: http://security.debian.org/pool/updates/main/c/curl/libcurl3_7.15.5-1etch3_powerpc.deb; http://security.debian.org/pool/updates/main/c/curl/libcurl3-gnutls_7.15.5-1etch3_powerpc.deb; http://security.debian.org/pool/updates/main/c/curl/libcurl3-openssl-dev_7.15.5-1etch3_powerpc.deb; http://security.debian.org/pool/updates/main/c/curl/libcurl3-gnutls-dev_7.15.5-1etch3_powerpc.deb; http://security.debian.org/pool/updates/main/c/curl/libcurl3-dbg_7.15.5-1etch3_powerpc.deb; http://security.debian.org/pool/updates/main/c/curl/curl_7.15.5-1etch3_powerpc.deb
IBM S/390:: http://security.debian.org/pool/updates/main/c/curl/libcurl3-gnutls-dev_7.15.5-1etch3_s390.deb; http://security.debian.org/pool/updates/main/c/curl/libcurl3-openssl-dev_7.15.5-1etch3_s390.deb; http://security.debian.org/pool/updates/main/c/curl/libcurl3-gnutls_7.15.5-1etch3_s390.deb; http://security.debian.org/pool/updates/main/c/curl/libcurl3-dbg_7.15.5-1etch3_s390.deb; http://security.debian.org/pool/updates/main/c/curl/curl_7.15.5-1etch3_s390.deb; http://security.debian.org/pool/updates/main/c/curl/libcurl3_7.15.5-1etch3_s390.deb

Debian GNU/Linux 5.0 (lenny)

Source:: http://security.debian.org/pool/updates/main/c/curl/curl_7.18.2-8lenny3.dsc; http://security.debian.org/pool/updates/main/c/curl/curl_7.18.2-8lenny3.diff.gz; http://security.debian.org/pool/updates/main/c/curl/curl_7.18.2.orig.tar.gz
Alpha:: http://security.debian.org/pool/updates/main/c/curl/libcurl3-dbg_7.18.2-8lenny3_alpha.deb; http://security.debian.org/pool/updates/main/c/curl/libcurl3_7.18.2-8lenny3_alpha.deb; http://security.debian.org/pool/updates/main/c/curl/libcurl4-gnutls-dev_7.18.2-8lenny3_alpha.deb; http://security.debian.org/pool/updates/main/c/curl/curl_7.18.2-8lenny3_alpha.deb; http://security.debian.org/pool/updates/main/c/curl/libcurl3-gnutls_7.18.2-8lenny3_alpha.deb; http://security.debian.org/pool/updates/main/c/curl/libcurl4-openssl-dev_7.18.2-8lenny3_alpha.deb
AMD64:: http://security.debian.org/pool/updates/main/c/curl/libcurl4-openssl-dev_7.18.2-8lenny3_amd64.deb; http://security.debian.org/pool/updates/main/c/curl/curl_7.18.2-8lenny3_amd64.deb; http://security.debian.org/pool/updates/main/c/curl/libcurl3-dbg_7.18.2-8lenny3_amd64.deb; http://security.debian.org/pool/updates/main/c/curl/libcurl3_7.18.2-8lenny3_amd64.deb; http://security.debian.org/pool/updates/main/c/curl/libcurl3-gnutls_7.18.2-8lenny3_amd64.deb; http://security.debian.org/pool/updates/main/c/curl/libcurl4-gnutls-dev_7.18.2-8lenny3_amd64.deb
ARM:: http://security.debian.org/pool/updates/main/c/curl/libcurl4-openssl-dev_7.18.2-8lenny3_arm.deb; http://security.debian.org/pool/updates/main/c/curl/libcurl3-gnutls_7.18.2-8lenny3_arm.deb; http://security.debian.org/pool/updates/main/c/curl/libcurl3_7.18.2-8lenny3_arm.deb; http://security.debian.org/pool/updates/main/c/curl/curl_7.18.2-8lenny3_arm.deb; http://security.debian.org/pool/updates/main/c/curl/libcurl3-dbg_7.18.2-8lenny3_arm.deb; http://security.debian.org/pool/updates/main/c/curl/libcurl4-gnutls-dev_7.18.2-8lenny3_arm.deb
ARM EABI:: http://security.debian.org/pool/updates/main/c/curl/curl_7.18.2-8lenny3_armel.deb; http://security.debian.org/pool/updates/main/c/curl/libcurl4-gnutls-dev_7.18.2-8lenny3_armel.deb; http://security.debian.org/pool/updates/main/c/curl/libcurl3-gnutls_7.18.2-8lenny3_armel.deb; http://security.debian.org/pool/updates/main/c/curl/libcurl4-openssl-dev_7.18.2-8lenny3_armel.deb; http://security.debian.org/pool/updates/main/c/curl/libcurl3-dbg_7.18.2-8lenny3_armel.deb; http://security.debian.org/pool/updates/main/c/curl/libcurl3_7.18.2-8lenny3_armel.deb
HP Precision:: http://security.debian.org/pool/updates/main/c/curl/libcurl4-gnutls-dev_7.18.2-8lenny3_hppa.deb; http://security.debian.org/pool/updates/main/c/curl/libcurl3_7.18.2-8lenny3_hppa.deb; http://security.debian.org/pool/updates/main/c/curl/libcurl3-gnutls_7.18.2-8lenny3_hppa.deb; http://security.debian.org/pool/updates/main/c/curl/curl_7.18.2-8lenny3_hppa.deb; http://security.debian.org/pool/updates/main/c/curl/libcurl3-dbg_7.18.2-8lenny3_hppa.deb; http://security.debian.org/pool/updates/main/c/curl/libcurl4-openssl-dev_7.18.2-8lenny3_hppa.deb
Intel IA-32:: http://security.debian.org/pool/updates/main/c/curl/curl_7.18.2-8lenny3_i386.deb; http://security.debian.org/pool/updates/main/c/curl/libcurl3-gnutls_7.18.2-8lenny3_i386.deb; http://security.debian.org/pool/updates/main/c/curl/libcurl4-gnutls-dev_7.18.2-8lenny3_i386.deb; http://security.debian.org/pool/updates/main/c/curl/libcurl4-openssl-dev_7.18.2-8lenny3_i386.deb; http://security.debian.org/pool/updates/main/c/curl/libcurl3-dbg_7.18.2-8lenny3_i386.deb; http://security.debian.org/pool/updates/main/c/curl/libcurl3_7.18.2-8lenny3_i386.deb
Intel IA-64:: http://security.debian.org/pool/updates/main/c/curl/libcurl3-gnutls_7.18.2-8lenny3_ia64.deb; http://security.debian.org/pool/updates/main/c/curl/curl_7.18.2-8lenny3_ia64.deb; http://security.debian.org/pool/updates/main/c/curl/libcurl3_7.18.2-8lenny3_ia64.deb; http://security.debian.org/pool/updates/main/c/curl/libcurl3-dbg_7.18.2-8lenny3_ia64.deb; http://security.debian.org/pool/updates/main/c/curl/libcurl4-openssl-dev_7.18.2-8lenny3_ia64.deb; http://security.debian.org/pool/updates/main/c/curl/libcurl4-gnutls-dev_7.18.2-8lenny3_ia64.deb
Big-endian MIPS:: http://security.debian.org/pool/updates/main/c/curl/libcurl3-dbg_7.18.2-8lenny3_mips.deb; http://security.debian.org/pool/updates/main/c/curl/curl_7.18.2-8lenny3_mips.deb; http://security.debian.org/pool/updates/main/c/curl/libcurl3-gnutls_7.18.2-8lenny3_mips.deb; http://security.debian.org/pool/updates/main/c/curl/libcurl3_7.18.2-8lenny3_mips.deb; http://security.debian.org/pool/updates/main/c/curl/libcurl4-gnutls-dev_7.18.2-8lenny3_mips.deb; http://security.debian.org/pool/updates/main/c/curl/libcurl4-openssl-dev_7.18.2-8lenny3_mips.deb
PowerPC:: http://security.debian.org/pool/updates/main/c/curl/curl_7.18.2-8lenny3_powerpc.deb; http://security.debian.org/pool/updates/main/c/curl/libcurl3-dbg_7.18.2-8lenny3_powerpc.deb; http://security.debian.org/pool/updates/main/c/curl/libcurl4-gnutls-dev_7.18.2-8lenny3_powerpc.deb; http://security.debian.org/pool/updates/main/c/curl/libcurl3-gnutls_7.18.2-8lenny3_powerpc.deb; http://security.debian.org/pool/updates/main/c/curl/libcurl4-openssl-dev_7.18.2-8lenny3_powerpc.deb; http://security.debian.org/pool/updates/main/c/curl/libcurl3_7.18.2-8lenny3_powerpc.deb

MD5 checksums of the listed files are available in the original advisory.