The Berkeley Open Infrastructure for Network Computing (BOINC) client software incorrectly checked the result after calling the RSA_public_decrypt function, allowing a malformed signature to be treated as a good signature rather than as an error. This issue affected the signature checks on RSA keys used with SSL/TLS. References: http://bugs.debian.org/cgi-bin/bugreport.cgi?bug=511521 This issue is related with recent OpenSSL's CVE-2008-5077 flaw.
This issue affects all versions of the boinc-client package, as shipped with Fedora updates of 9, 10 and devel. Please fix. Relevant part of the code (lib/crypt.C): 228 int decrypt_public(R_RSA_PUBLIC_KEY& key, DATA_BLOCK& in, DATA_BLOCK& out) { 229 RSA* rp = RSA_new(); 230 public_to_openssl(key, rp); 231 RSA_public_decrypt(in.len, in.data, out.data, rp, RSA_PKCS1_PADDING); 232 out.len = RSA_size(rp); 233 return 0; 234 }
boinc-client-6.4.5-2.20081217svn.fc10 has been submitted as an update for Fedora 10. http://admin.fedoraproject.org/updates/boinc-client-6.4.5-2.20081217svn.fc10
boinc-client-6.4.5-2.20081217svn.fc9 has been submitted as an update for Fedora 9. http://admin.fedoraproject.org/updates/boinc-client-6.4.5-2.20081217svn.fc9
Common Vulnerabilities and Exposures assigned an identifier CVE-2009-0126 to the following vulnerability: The decrypt_public function in lib/crypt.cpp in the client in Berkeley Open Infrastructure for Network Computing (BOINC) 6.2.14 and 6.4.5 does not check the return value from the OpenSSL RSA_public_decrypt function, which allows remote attackers to bypass validation of the certificate chain via a malformed SSL/TLS signature, a similar vulnerability to CVE-2008-5077. References: http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2009-0126 http://openwall.com/lists/oss-security/2009/01/12/4 http://boinc.berkeley.edu/trac/changeset/16883 http://boinc.berkeley.edu/trac/ticket/823 http://bugs.debian.org/cgi-bin/bugreport.cgi?bug=511521
boinc-client-6.4.5-2.20081217svn.fc9 has been pushed to the Fedora 9 stable repository. If problems still persist, please make note of it in this bug report.
boinc-client-6.4.5-2.20081217svn.fc10 has been pushed to the Fedora 10 stable repository. If problems still persist, please make note of it in this bug report.
Closing -- not autoclosed by Bodhi:(