SB2026081528 - Multiple vulnerabilities in Tcpreplay
Published: August 15, 2026
Breakdown by Severity
- Low
- Medium
- High
- Critical
Description
This security bulletin contains information about 3 vulnerabilities.
1) Out-of-bounds write (CVE-ID: N/A)
CWE-ID: CWE-787 - Out-of-bounds write
CVSSv4: 7.1 [CVSS:4.0/AV:L/AC:L/AT:P/PR:N/UI:A/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N]
The vulnerability allows a remote attacker to execute arbitrary code.
The vulnerability exists due to out-of-bounds write in the libtcpedit dlt_radiotap plugin function dlt_radiotap_get_80211() when processing an untrusted pcap_pkthdr/pktdata pair through the public tcpedit_packet() API. A remote attacker can supply a crafted packet with attacker-controlled length and content to execute arbitrary code.
User interaction is required to process attacker-supplied input, and the issue is reachable in third-party programs that link libtcpedit and pass an unclamped caplen from an untrusted source.
2) Out-of-bounds read (CVE-ID: N/A)
CWE-ID: CWE-125 - Out-of-bounds read
CVSSv4: 6.8 [CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:A/VC:H/VI:N/VA:H/SC:N/SI:N/SA:N]
The vulnerability allows a remote attacker to disclose sensitive information and cause a denial of service.
The vulnerability exists due to out-of-bounds read in tcpliveplay when parsing a crafted pcap file. A remote attacker can trick the victim into opening a crafted pcap file to disclose sensitive information and cause a denial of service.
User interaction is required to supply the crafted pcap file to the tool. In one variant, over-read heap data is subsequently transmitted onto the live network.
3) Out-of-bounds read (CVE-ID: N/A)
CWE-ID: CWE-125 - Out-of-bounds read
CVSSv4: 6.8 [CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:A/VC:L/VI:N/VA:H/SC:N/SI:N/SA:N]
The vulnerability allows a remote attacker to cause a denial of service and disclose sensitive information.
The vulnerability exists due to out-of-bounds read in tcpprep/tcpreplay/tcprewrite cache-file parsing when processing a crafted cache file with a mismatched packets_per_byte value and index stride. A remote attacker can trick the victim into processing a crafted cache file to cause a denial of service and disclose sensitive information.
User interaction is required to run tcpprep, tcpreplay, or tcprewrite on an attacker-supplied cache file.
Remediation
Install update from vendor's website.