CVE-2011-1935
First published: Fri Oct 20 2017(Updated: )
pcap-linux.c in libpcap 1.1.1 before commit ea9432fabdf4b33cbc76d9437200e028f1c47c93 when snaplen is set may truncate packets, which might allow remote attackers to send arbitrary data while avoiding detection via crafted packets.
Credit: secalert@redhat.com
| Affected Software | Affected Version | How to fix |
|---|---|---|
| debian/libpcap | 1.10.0-2 1.10.3-1 1.10.4-5 | |
| Libpcap | >=1.1.1<1.2.1 |
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Reference Links
- https://security-tracker.debian.org/tracker/CVE-2011-1935/
- https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=623868
- https://bugs.debian.org/cgi-bin/bugreport.cgi?att=1;bug=623868;filename=0001-Fix-the-calculation-of-the-frame-size-in-memory-mapp.patch;msg=10
- http://www.openwall.com/lists/oss-security/2014/02/08/5
- http://www.openwall.com/lists/oss-security/2011/05/19/11
- http://thread.gmane.org/gmane.network.tcpdump.devel/5018
- http://article.gmane.org/gmane.network.tcpdump.devel/4968
- https://bugs.debian.org/cgi-bin/bugreport.cgi?att=1%3Bbug=623868%3Bfilename=0001-Fix-the-calculation-of-the-frame-size-in-memory-mapp.patch%3Bmsg=10
Frequently Asked Questions
What is the severity of CVE-2011-1935?
CVE-2011-1935 is considered a medium severity vulnerability due to potential unauthorized data exposure.
How do I fix CVE-2011-1935?
To fix CVE-2011-1935, upgrade to libpcap versions 1.10.0-2, 1.10.3-1, or 1.10.4-5.
What causes CVE-2011-1935?
CVE-2011-1935 is caused by the truncation of packets when the snaplen parameter is set, allowing crafted packets to bypass detection.
Who is affected by CVE-2011-1935?
Users running affected versions of libpcap, particularly versions from 1.1.1 to 1.2.1, are vulnerable to CVE-2011-1935.
What can attackers do with CVE-2011-1935?
Attackers can exploit CVE-2011-1935 to send arbitrary data undetected, potentially leading to further exploitation.
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- collector/mitre-cve
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- package-manager/debian
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- version/libpcap/1.1.1