CVE-2013-7423

Enterprise Linux Server Aus vulnerability

CVSS

5.0

EPSS

5.8%

EPSS pct

92th

Exploited

No known

The send_dg function in resolv/res_send.c in GNU C Library (aka glibc or libc6) before 2.20 does not properly reuse file descriptors, which allows remote attackers to send DNS queries to unintended locations via a large number of requests that trigger a call to the getaddrinfo function.

Affected vendor

Redhat

Affected product

Enterprise Linux Server Aus

CVSS vector

AV:N/AC:L/Au:N/C:N/I:P/A:N

Weakness type (CWE)

CWE-17

Published

2015-02-24

Risk analysis

Based on its CVSS vector, this vulnerability is exploitable over the network, low attack complexity, requiring no authentication. Successful exploitation leads to partial impact to integrity.

Its EPSS score of 5.8% reflects a lower probability of exploitation activity in the wild over the next 30 days, placing it above 92% of all scored CVEs.

Check your external exposure to CVE-2013-7423

Confirm whether Redhat Enterprise Linux Server Aus is running on any internet-facing host or subdomain.
Match discovered service fingerprints against the version affected by CVE-2013-7423.
Prioritise remediation if the asset is public, business-critical, or near authentication/payment flows.

How ThreatPort helps with CVE-2013-7423

ThreatPort's external attack surface scanner checks your internet-facing assets — agentlessly, from the outside in — for the exposed services and versions that CVE-2013-7423 affects, then prioritises the finding by real risk using CISA KEV and FIRST.org EPSS.

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