Bug 1760622 (CVE-2019-15162) - CVE-2019-15162 libpcap: Information disclosure in rpcapd/daemon.c
Summary: CVE-2019-15162 libpcap: Information disclosure in rpcapd/daemon.c
Keywords:
Status: CLOSED NOTABUG
Alias: CVE-2019-15162
Product: Security Response
Classification: Other
Component: vulnerability
Version: unspecified
Hardware: All
OS: Linux
low
low
Target Milestone: ---
Assignee: Red Hat Product Security
QA Contact:
URL:
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Depends On: 1760624
Blocks: 1760627
TreeView+ depends on / blocked
 
Reported: 2019-10-10 23:47 UTC by Pedro Sampaio
Modified: 2020-01-16 20:09 UTC (History)
6 users (show)

Fixed In Version: libpcap 1.9.1
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Last Closed: 2020-01-16 20:09:33 UTC

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Description Pedro Sampaio 2019-10-10 23:47:30 UTC 
rpcapd/daemon.c in libpcap before 1.9.1 on non-Windows platforms provides details about why authentication failed, which might make it easier for attackers to enumerate valid usernames.

Upstream patch:

https://github.com/the-tcpdump-group/libpcap/commit/484d60cbf7ca4ec758c3cbb8a82d68b244a78d58

References:

https://github.com/the-tcpdump-group/libpcap/blob/libpcap-1.9/CHANGES
Comment 1 Pedro Sampaio 2019-10-10 23:57:51 UTC 
Created libpcap tracking bugs for this issue:

Affects: fedora-all [bug 1760624]
Comment 2 Riccardo Schirone 2020-01-16 16:35:07 UTC 
RPCAPD support added in tcpdump 1.9.0 (see https://github.com/the-tcpdump-group/libpcap/blob/libpcap-1.9/CHANGES#L74).
RHEL 6 and 7 ship an older version of libpcap that does not even have the vulnerable file.
RHEL 8 ships a newer version, however it is not compiled with RPCAPD support (--enable-remote is not specified).
Comment 3 Riccardo Schirone 2020-01-16 16:35:10 UTC 
Statement:

This issue did not affect the versions of libpcap as shipped with Red Hat Enterprise Linux 6, 7, and 8 as they did not include support for RPCAPD.
Comment 4 Product Security DevOps Team 2020-01-16 20:09:33 UTC 
This bug is now closed. Further updates for individual products will be reflected on the CVE page(s):

https://access.redhat.com/security/cve/cve-2019-15162
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