CVE-2015-7547
glibc - security update
8.1
HIGH
CVSS 3.1
EPSS 93.9%
Description
Multiple stack-based buffer overflows in the (1) send_dg and (2) send_vc functions in the libresolv library in the GNU C Library (aka glibc or libc6) before 2.23 allow remote attackers to cause a denial of service (crash) or possibly execute arbitrary code via a crafted DNS response that triggers a call to the getaddrinfo function with the AF_UNSPEC or AF_INET6 address family, related to performing "dual A/AAAA DNS queries" and the libnss_dns.so.2 NSS module.
How to fix CVE-2015-7547
To remediate CVE-2015-7547, upgrade the affected package to a fixed version below.
- —upgrade to 2.11.3-4+deb6u11 or later
- —upgrade to 2.21-8 or later
- —upgrade to 2.19-18+deb8u3 or later
Is CVE-2015-7547 being exploited?
Likely — EPSS is 93.9%, placing CVE-2015-7547 in the top tier of vulnerabilities by exploitation probability. Prioritise patching.
Affected packages (3)
- from 0, < 2.11.3-4+deb6u11
- from 0, < 2.21-8
- from 0, < 2.19-18+deb8u3
CVSS scores
| Source | Version | Severity | Vector |
|---|---|---|---|
| osv | CVSS 3.1 | HIGH8.1 | CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H |