Описание
Avahi is a system which facilitates service discovery on a local network via the mDNS/DNS-SD protocol suite. In versions 0.9rc2 and below, avahi-daemon can be crashed via a segmentation fault by sending an unsolicited mDNS response containing a recursive CNAME record, where the alias and canonical name point to the same domain (e.g., "h.local" as a CNAME for "h.local"). This causes unbounded recursion in the lookup_handle_cname function, leading to stack exhaustion. The vulnerability affects record browsers where AVAHI_LOOKUP_USE_MULTICAST is set explicitly, which includes record browsers created by resolvers used by nss-mdns. This issue is patched in commit 78eab31128479f06e30beb8c1cbf99dd921e2524.
| Релиз | Статус | Примечание |
|---|---|---|
| devel | not-affected | 0.8-18ubuntu1 |
| esm-infra-legacy/trusty | released | 0.6.31-4ubuntu1.3+esm5 |
| esm-infra-legacy/xenial | released | 0.6.32~rc+dfsg-1ubuntu2.3+esm5 |
| esm-infra/bionic | released | 0.7-3.1ubuntu1.3+esm4 |
| esm-infra/focal | released | 0.7-4ubuntu7.3+esm2 |
| esm-infra/xenial | released | 0.6.32~rc+dfsg-1ubuntu2.3+esm5 |
| jammy | released | 0.8-5ubuntu5.5 |
| noble | released | 0.8-13ubuntu6.2 |
| questing | released | 0.8-16ubuntu3.2 |
| resolute | not-affected | 0.8-18ubuntu1 |
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EPSS
6.5 Medium
CVSS3
Связанные уязвимости
Avahi is a system which facilitates service discovery on a local network via the mDNS/DNS-SD protocol suite. In versions 0.9rc2 and below, avahi-daemon can be crashed via a segmentation fault by sending an unsolicited mDNS response containing a recursive CNAME record, where the alias and canonical name point to the same domain (e.g., "h.local" as a CNAME for "h.local"). This causes unbounded recursion in the lookup_handle_cname function, leading to stack exhaustion. The vulnerability affects record browsers where AVAHI_LOOKUP_USE_MULTICAST is set explicitly, which includes record browsers created by resolvers used by nss-mdns. This issue is patched in commit 78eab31128479f06e30beb8c1cbf99dd921e2524.
Avahi is a system which facilitates service discovery on a local network via the mDNS/DNS-SD protocol suite. In versions 0.9rc2 and below, avahi-daemon can be crashed via a segmentation fault by sending an unsolicited mDNS response containing a recursive CNAME record, where the alias and canonical name point to the same domain (e.g., "h.local" as a CNAME for "h.local"). This causes unbounded recursion in the lookup_handle_cname function, leading to stack exhaustion. The vulnerability affects record browsers where AVAHI_LOOKUP_USE_MULTICAST is set explicitly, which includes record browsers created by resolvers used by nss-mdns. This issue is patched in commit 78eab31128479f06e30beb8c1cbf99dd921e2524.
Avahi is a system which facilitates service discovery on a local netwo ...
EPSS
6.5 Medium
CVSS3