CVE-2015-7547
Published: 16 February 2016
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.
Notes
| Author | Note |
|---|---|
| jdstrand | stable-phone-overlay will be updated in OTA 9.1 tyhicks alerted the Snappy team for an emergency update |
Priority
Status
| Package | Release | Status |
|---|---|---|
|
eglibc Launchpad, Ubuntu, Debian |
precise |
Released
(2.15-0ubuntu10.13)
|
| trusty |
Released
(2.19-0ubuntu6.7)
|
|
| upstream |
Needs triage
|
|
| vivid |
Does not exist
|
|
| wily |
Does not exist
|
|
|
glibc Launchpad, Ubuntu, Debian |
precise |
Does not exist
|
| trusty |
Does not exist
|
|
| upstream |
Needs triage
|
|
| vivid |
Ignored
(end of life)
|
|
| wily |
Released
(2.21-0ubuntu4.1)
|
Severity score breakdown
| Parameter | Value |
|---|---|
| Base score | 8.1 |
| Attack vector | Network |
| Attack complexity | High |
| Privileges required | None |
| User interaction | None |
| Scope | Unchanged |
| Confidentiality | High |
| Integrity impact | High |
| Availability impact | High |
| Vector | CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H |