-----BEGIN PGP SIGNED MESSAGE----- Hash: SHA512 - ------------------------------------------------------------------------- Debian Security Advisory DSA-4309-1 security@xxxxxxxxxx https://www.debian.org/security/ Yves-Alexis Perez October 01, 2018 https://www.debian.org/security/faq - ------------------------------------------------------------------------- Package : strongswan CVE ID : CVE-2018-17540 Google's OSS-Fuzz revealed an exploitable bug in the gmp plugin caused by the patch that fixes CVE-2018-16151 and CVE-2018-16151 (DSA-4305-1). An attacker could trigger it using crafted certificates with RSA keys with very small moduli. Verifying signatures with such keys would cause an integer underflow and subsequent heap buffer overflow resulting in a crash of the daemon. While arbitrary code execution is not completely ruled out because of the heap buffer overflow, due to the form of the data written to the buffer it seems difficult to actually exploit it in such a way. For the stable distribution (stretch), this problem has been fixed in version 5.5.1-4+deb9u4. We recommend that you upgrade your strongswan packages. For the detailed security status of strongswan please refer to its security tracker page at: https://security-tracker.debian.org/tracker/strongswan Further information about Debian Security Advisories, how to apply these updates to your system and frequently asked questions can be found at: https://www.debian.org/security/ Mailing list: debian-security-announce@xxxxxxxxxxxxxxxx -----BEGIN PGP SIGNATURE----- iQEzBAEBCgAdFiEE8vi34Qgfo83x35gF3rYcyPpXRFsFAluzH80ACgkQ3rYcyPpX RFvI5wf8DILbxELj4t7YjgZyT0pKzqSm2fDVO/Xjl6hj0Fnf6XidEvNx764NFoCo x6MBILJohIAbzZo/3sT41vAuKKMfiasuUY0KSz4hHgRlwLqiNBOOTuKrR1PhrtmS BKJg9PRfi0a+dwb2J0+UkKcaZQYMItqEBCjsZkF46lBFSx+dgs6spbSy3MmiY0ve szxg/JyRLS6WLE87R8AUrBskPwcYu3jhjg53E02VnpKB+UXXb6NWC9D2zlpWRilx 9RQPofwjWNYoM7pM1QITPuUeFR5ia+7X7BA9SL7McMV6BWGimVCDEMZshTpqRTME dOx9vpXrO5JZwMFk2hkxhFoA6ewo2g== =L68k -----END PGP SIGNATURE-----
