drucken bookmarks versenden konfigurieren admin pdf Sicherheit: Preisgabe von Informationen in Dnsmasq
Name: |
Preisgabe von Informationen in Dnsmasq |
|
ID: |
USN-4976-1 |
|
Distribution: |
Ubuntu |
|
Plattformen: |
Ubuntu 18.04 LTS, Ubuntu 20.04 LTS, Ubuntu 20.10, Ubuntu 21.04 |
|
Datum: |
Mi, 2. Juni 2021, 23:33 |
|
Referenzen: |
https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-3448 |
|
Applikationen: |
Dnsmasq |
|
Originalnachricht |
This is an OpenPGP/MIME signed message (RFC 4880 and 3156) --===============7840918320057094544== Content-Type: multipart/signed; micalg=pgp-sha256; protocol="application/pgp-signature"; boundary="U3sRW109Ryms7NIX07NQhVSTo5RfGIGEh"
This is an OpenPGP/MIME signed message (RFC 4880 and 3156) --U3sRW109Ryms7NIX07NQhVSTo5RfGIGEh Content-Type: multipart/mixed; boundary="cU1FtzP5uHpS0I1Ym9rNkNMbK71Am1abt"; protected-headers="v1" From: Marc Deslauriers <marc.deslauriers@canonical.com> Reply-To: Ubuntu Security <security@ubuntu.com> To: "ubuntu-security-announce@lists.ubuntu.com" <ubuntu-security-announce@lists.ubuntu.com> Message-ID: <3a0d8fd5-f068-6d79-492b-0cf6aef4a4a1@canonical.com> Subject: [USN-4976-1] Dnsmasq vulnerability
--cU1FtzP5uHpS0I1Ym9rNkNMbK71Am1abt Content-Type: text/plain; charset=utf-8 Content-Language: en-C Content-Transfer-Encoding: quoted-printable
========================================================================== Ubuntu Security Notice USN-4976-1 June 02, 2021
dnsmasq vulnerability ==========================================================================
A security issue affects these releases of Ubuntu and its derivatives:
- Ubuntu 21.04 - Ubuntu 20.10 - Ubuntu 20.04 LTS - Ubuntu 18.04 LTS
Summary:
Dnsmasq could be exposed to cache poisoning.
Software Description: - dnsmasq: Small caching DNS proxy and DHCP/TFTP server
Details:
Petr Mensik discovered that Dnsmasq incorrectly randomized source ports in certain configurations. A remote attacker could possibly use this issue to facilitate DNS cache poisoning attacks.
Update instructions:
The problem can be corrected by updating your system to the following package versions:
Ubuntu 21.04: dnsmasq 2.84-1ubuntu2.1 dnsmasq-base 2.84-1ubuntu2.1 dnsmasq-utils 2.84-1ubuntu2.1
Ubuntu 20.10: dnsmasq 2.82-1ubuntu1.3 dnsmasq-base 2.82-1ubuntu1.3 dnsmasq-utils 2.82-1ubuntu1.3
Ubuntu 20.04 LTS: dnsmasq 2.80-1.1ubuntu1.4 dnsmasq-base 2.80-1.1ubuntu1.4 dnsmasq-utils 2.80-1.1ubuntu1.4
Ubuntu 18.04 LTS: dnsmasq 2.79-1ubuntu0.4 dnsmasq-base 2.79-1ubuntu0.4 dnsmasq-utils 2.79-1ubuntu0.4
After a standard system update you need to reboot your computer to make all the necessary changes.
References: https://ubuntu.com/security/notices/USN-4976-1 CVE-2021-3448
Package Information: https://launchpad.net/ubuntu/+source/dnsmasq/2.84-1ubuntu2.1 https://launchpad.net/ubuntu/+source/dnsmasq/2.82-1ubuntu1.3 https://launchpad.net/ubuntu/+source/dnsmasq/2.80-1.1ubuntu1.4 https://launchpad.net/ubuntu/+source/dnsmasq/2.79-1ubuntu0.4
--cU1FtzP5uHpS0I1Ym9rNkNMbK71Am1abt--
--U3sRW109Ryms7NIX07NQhVSTo5RfGIGEh Content-Type: application/pgp-signature; name="OpenPGP_signature.asc" Content-Description: OpenPGP digital signature Content-Disposition: attachment; filename="OpenPGP_signature"
-----BEGIN PGP SIGNATURE-----
iQIzBAEBCgAdFiEEUMSg3c8x5FLOsZtRZWnYVadEvpMFAmC3jTEACgkQZWnYVadE vpPTqRAAn7i1l2wad/iVjwUNtt3QNweUWdSGdTsIBwwAg8i6XJD4nb5E0fkGRSnZ 1giXUWboIjqeKBfXaxSvghiBzVGKRDQE56IIaLKjx9xL/XOOEZzOIKv63m1Z3I/0 1C9hXkQRS/Bx2aVZHcKoLKMjGvRxKPfRcwsi+GE5wW2iZdClRZA3zNDwyOUW03BB 3jiOzJ9Cm29fRp7Fbs/P+HrFVUXSVGCdrNSPDYcYRr+5h72FLdwE7592flr9tBw/ VHhnISdKJm8ydRcMb/oWMoKWVx1KcgaR79reLShEdAEHSfLQhBFVsg0j5ZEAOvli D6pU2/MiSm+ROQvoNK/Dw9jLbas+TDGok6bRuNnK5yq69sWhEtM90saCKEoGC2qo 8JvdtLm+k28My7Wyxlzu32LzxU5Ks6aMon4HJ3Hz836Qagac4Gt03lm6hGjb3Gxq 2oZQkqMavU5qv/18foA+LO0zOncvqoeTbRGk3+Q6m7YB3YaX1vYOEcvoS9qTuSyQ seUvTKIQGb4ZcF7fUVvzUm3ivXns0zxgpsN7oeuUmtP8atd6ZKWQ7W53W5Mu0FMO d/7XyYN4q96G4KgMY8TFh0jobZ2hZb9Qbn0ZA22IEdYgi0vCWcv15O0Hf3Nm4kFc /pf5cGzU/Vl+9oygr/1rZMQ71QdrwJGchsh3aVScE4flHSt9Ojw= =JjL3 -----END PGP SIGNATURE-----
--U3sRW109Ryms7NIX07NQhVSTo5RfGIGEh--
--===============7840918320057094544== Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: base64 Content-Disposition: inline
LS0gCnVidW50dS1zZWN1cml0eS1hbm5vdW5jZSBtYWlsaW5nIGxpc3QKdWJ1bnR1LXNlY3VyaXR5 LWFubm91bmNlQGxpc3RzLnVidW50dS5jb20KTW9kaWZ5IHNldHRpbmdzIG9yIHVuc3Vic2NyaWJl IGF0OiBodHRwczovL2xpc3RzLnVidW50dS5jb20vbWFpbG1hbi9saXN0aW5mby91YnVudHUtc2Vj dXJpdHktYW5ub3VuY2UK
--===============7840918320057094544==--
|
|
|
|