PT-2016-1173 · Gnu+7 · Glibc+9
Carlos O𠆝Onell
+3
·
Publicado
2012-02-17
·
Atualizado
2026-01-27
·
CVE-2015-7547
CVSS v2.0
9.3
Alta
| Vetor | AV:N/AC:M/Au:N/C:C/I:C/A:C |
Name of the Vulnerable Software and Affected Versions
glibc versions prior to 2.23
Description
The issue is related to multiple stack-based buffer overflows in the send dg and send vc functions of the libresolv library in glibc. This can be exploited by a remote attacker to cause a denial of service 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. The exploitation may involve sending specially crafted DNS queries, leading to a buffer overflow condition.
Recommendations
For glibc versions prior to 2.23, update to version 2.23 or later to resolve the issue. As a temporary workaround, consider restricting access to the vulnerable libresolv library or disabling the use of the send dg and send vc functions until a patch is available. Additionally, avoid using the getaddrinfo function with the AF UNSPEC or AF INET6 address family in the affected API endpoints until the issue is resolved.
Exploit
Correção
DoS
RCE
Buffer Overflow
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Alt Linux
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Glibc