CVE-2011-1935
9.8
CRITICAL · CVSS 3.1 · EPSS 3.6% (pctl 89)
In your normal cycle
Critical by CVSS (9.8), but no sign of active exploitation.
Description
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.
Scoring
| CVSS | 9.8 (CRITICAL, v3.1) |
|---|---|
| Vector | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H |
| EPSS | 3.65% — more likely to be exploited than 89% of all CVEs |
| On CISA KEV | no |
| Public exploit | none known |
| Published | 2017-10-20 |
| Last modified | 2026-06-16 |
Affected (1)
| Vendor | Product |
|---|---|
| tcpdump | libpcap |
References
- http://article.gmane.org/gmane.network.tcpdump.devel/4968
- http://thread.gmane.org/gmane.network.tcpdump.devel/5018
- http://www.openwall.com/lists/oss-security/2011/05/19/11
- http://www.openwall.com/lists/oss-security/2014/02/08/5
- 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
- https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=623868
- https://security-tracker.debian.org/tracker/CVE-2011-1935/
- http://article.gmane.org/gmane.network.tcpdump.devel/4968
- http://thread.gmane.org/gmane.network.tcpdump.devel/5018
- http://www.openwall.com/lists/oss-security/2011/05/19/11
- http://www.openwall.com/lists/oss-security/2014/02/08/5
- 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
- https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=623868
- https://security-tracker.debian.org/tracker/CVE-2011-1935/
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