drucken bookmarks versenden konfigurieren admin pdf Sicherheit: Mehrere Probleme in Dnsmasq
Name: |
Mehrere Probleme in Dnsmasq |
|
ID: |
USN-4698-1 |
|
Distribution: |
Ubuntu |
|
Plattformen: |
Ubuntu 16.04 LTS, Ubuntu 18.04 LTS, Ubuntu 20.04 LTS, Ubuntu 20.10 |
|
Datum: |
Di, 19. Januar 2021, 15:10 |
|
Referenzen: |
https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2020-25684
https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2020-25683
https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2020-25685
https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2019-14834
https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2020-25687
https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2020-25686
https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2020-25682
https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2020-25681 |
|
Applikationen: |
Dnsmasq |
|
Originalnachricht |
This is an OpenPGP/MIME signed message (RFC 4880 and 3156) --===============5053923261492519878== Content-Type: multipart/signed; micalg=pgp-sha256; protocol="application/pgp-signature"; boundary="XFR1MISWKXaFKeO7Nj4PXpFzHB2NCI6z6"
This is an OpenPGP/MIME signed message (RFC 4880 and 3156) --XFR1MISWKXaFKeO7Nj4PXpFzHB2NCI6z6 Content-Type: multipart/mixed; boundary="m8dG1TfRfm2RCMqKDuyCWTjIpPV9bujfv"; protected-headers="v1" From: Marc Deslauriers <marc.deslauriers@canonical.com> To: "ubuntu-security-announce@lists.ubuntu.com" <ubuntu-security-announce@lists.ubuntu.com> Message-ID: <d2db4b08-0f4a-bcb2-c0ef-c7c0e48f1875@canonical.com> Subject: [USN-4698-1] Dnsmasq vulnerabilities
--m8dG1TfRfm2RCMqKDuyCWTjIpPV9bujfv Content-Type: text/plain; charset=utf-8 Content-Language: en-C Content-Transfer-Encoding: quoted-printable
========================================================================== Ubuntu Security Notice USN-4698-1 January 19, 2021
dnsmasq vulnerabilities ==========================================================================
A security issue affects these releases of Ubuntu and its derivatives:
- Ubuntu 20.10 - Ubuntu 20.04 LTS - Ubuntu 18.04 LTS - Ubuntu 16.04 LTS
Summary:
Several security issues were fixed in Dnsmasq.
Software Description: - dnsmasq: Small caching DNS proxy and DHCP/TFTP server
Details:
Moshe Kol and Shlomi Oberman discovered that Dnsmasq incorrectly handled memory when sorting RRsets. A remote attacker could use this issue to cause Dnsmasq to hang, resulting in a denial of service, or possibly execute arbitrary code. (CVE-2020-25681, CVE-2020-25687)
Moshe Kol and Shlomi Oberman discovered that Dnsmasq incorrectly handled extracting certain names. A remote attacker could use this issue to cause Dnsmasq to hang, resulting in a denial of service, or possibly execute arbitrary code. (CVE-2020-25682, CVE-2020-25683)
Moshe Kol and Shlomi Oberman discovered that Dnsmasq incorrectly implemented address/port checks. A remote attacker could use this issue to perform a cache poisoning attack. (CVE-2020-25684)
Moshe Kol and Shlomi Oberman discovered that Dnsmasq incorrectly implemented query resource name checks. A remote attacker could use this issue to perform a cache poisoning attack. (CVE-2020-25685)
Moshe Kol and Shlomi Oberman discovered that Dnsmasq incorrectly handled multiple query requests for the same resource name. A remote attacker could use this issue to perform a cache poisoning attack. (CVE-2020-25686)
It was discovered that Dnsmasq incorrectly handled memory during DHCP response creation. A remote attacker could possibly use this issue to cause Dnsmasq to consume resources, leading to a denial of service. This issue only affected Ubuntu 16.04 LTS, Ubuntu 18.04 LTS, and Ubuntu 20.04 LTS. (CVE-2019-14834)
Update instructions:
The problem can be corrected by updating your system to the following package versions:
Ubuntu 20.10: dnsmasq 2.82-1ubuntu1.1 dnsmasq-base 2.82-1ubuntu1.1 dnsmasq-utils 2.82-1ubuntu1.1
Ubuntu 20.04 LTS: dnsmasq 2.80-1.1ubuntu1.2 dnsmasq-base 2.80-1.1ubuntu1.2 dnsmasq-utils 2.80-1.1ubuntu1.2
Ubuntu 18.04 LTS: dnsmasq 2.79-1ubuntu0.2 dnsmasq-base 2.79-1ubuntu0.2 dnsmasq-utils 2.79-1ubuntu0.2
Ubuntu 16.04 LTS: dnsmasq 2.75-1ubuntu0.16.04.7 dnsmasq-base 2.75-1ubuntu0.16.04.7 dnsmasq-utils 2.75-1ubuntu0.16.04.7
After a standard system update you need to reboot your computer to make all the necessary changes.
References: https://usn.ubuntu.com/4698-1 CVE-2019-14834, CVE-2020-25681, CVE-2020-25682, CVE-2020-25683, CVE-2020-25684, CVE-2020-25685, CVE-2020-25686, CVE-2020-25687
Package Information: https://launchpad.net/ubuntu/+source/dnsmasq/2.82-1ubuntu1.1 https://launchpad.net/ubuntu/+source/dnsmasq/2.80-1.1ubuntu1.2 https://launchpad.net/ubuntu/+source/dnsmasq/2.79-1ubuntu0.2 https://launchpad.net/ubuntu/+source/dnsmasq/2.75-1ubuntu0.16.04.7
--m8dG1TfRfm2RCMqKDuyCWTjIpPV9bujfv--
--XFR1MISWKXaFKeO7Nj4PXpFzHB2NCI6z6 Content-Type: application/pgp-signature; name="OpenPGP_signature.asc" Content-Description: OpenPGP digital signature Content-Disposition: attachment; filename="OpenPGP_signature"
-----BEGIN PGP SIGNATURE-----
iQIzBAEBCgAdFiEEUMSg3c8x5FLOsZtRZWnYVadEvpMFAmAG2MQACgkQZWnYVadE vpO9BA//WQvJus+cJFYHpn4DkIMsfMHChojLSP63b4rkeS3h0ZX3sSInkCnN/Yyy ZHstNOH5mU6jxrlMNcMSVGtH90QF/olByNBKv6sJwclGS/tg3VLD7KvGACqlnxOf ELZLpzCaeLyLJdv1xxUCWy/KHxH0n3FbgAAEPHeyTBc5hxGytHbNxC42jwBO8OVC gru41dBPzTEd4wheGZyU+lc4gYwBzE0APaLMHOBL1JvxOGQQlFrlpA0PquuLw7hs K55zOCf3IxZ201koumJy69+x24Pyb76SrKl/3mhRkVQsqydxwXtBysg8C0t1Ompm 1f5nyiLO6VPK4VilXXrwPCh47Cw4uAkF2NgytFYPk59azS4jQc2G6Uosgmk3xhNV Ac1jvdPSmVBuAPoehda2E1jKfvj0+XrtRH1+L3J1SBscBMm1T2cUlYPznhi1jEhq DvS+0b1LZdyW+CFsrh6dvdp6lWjQ8wJS0bWOpQgf4GX7tHOKjdoUUoN0SL4Gcrpk fFG5m4qG/hrpQKCzon8Y94vW6eAOPGk0YkNBg2ivvr0N8CiVbe1ZQhoSWw6Q//Gw y99xuqaYLRMnADanm/LGeJZZ+r2i0ntbUXDE+/WSRAVFl+WEs0CUvYqErd3AsYPq 8Bnu5DYYDh7lNO6Q1sFbZ7OIUC78Cac1BYd0My+4xZ60eYcZn0o= =424/ -----END PGP SIGNATURE-----
--XFR1MISWKXaFKeO7Nj4PXpFzHB2NCI6z6--
--===============5053923261492519878== Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: base64 Content-Disposition: inline
LS0gCnVidW50dS1zZWN1cml0eS1hbm5vdW5jZSBtYWlsaW5nIGxpc3QKdWJ1bnR1LXNlY3VyaXR5 LWFubm91bmNlQGxpc3RzLnVidW50dS5jb20KTW9kaWZ5IHNldHRpbmdzIG9yIHVuc3Vic2NyaWJl IGF0OiBodHRwczovL2xpc3RzLnVidW50dS5jb20vbWFpbG1hbi9saXN0aW5mby91YnVudHUtc2Vj dXJpdHktYW5ub3VuY2UK
--===============5053923261492519878==--
|
|
|
|