sngrep through 1.9.0 contains an infinite loop vulnerability in capture_packet_reasm_ip() in src/capture.c that allows attackers to cause denial of service via crafted NFLOG TLVs. Attackers can supply a pcap file with link type NFLOG containing a non-payload TLV with length under 4, making the capture thread spin at full CPU and stop processing packets.
Metrics
Affected Vendors & Products
References
History
Thu, 05 Nov 2026 12:30:00 +0000
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ssvc
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Wed, 04 Nov 2026 19:30:00 +0000
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Wed, 04 Nov 2026 12:45:00 +0000
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| Description | sngrep through 1.9.0 contains an infinite loop vulnerability in capture_packet_reasm_ip() in src/capture.c that allows attackers to cause denial of service via crafted NFLOG TLVs. Attackers can supply a pcap file with link type NFLOG containing a non-payload TLV with length under 4, making the capture thread spin at full CPU and stop processing packets. | |
| Title | sngrep through 1.9.0 Infinite Loop DoS via Crafted NFLOG TLV | |
| First Time appeared |
Irontec
Irontec sngrep |
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| Weaknesses | CWE-835 | |
| CPEs | cpe:2.3:a:irontec:sngrep:*:*:*:*:*:*:*:* | |
| Vendors & Products |
Irontec
Irontec sngrep |
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| References |
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| Metrics |
cvssV3_1
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Status: PUBLISHED
Assigner: VulnCheck
Published: 2026-11-04T12:31:21.803Z
Updated: 2026-11-04T18:51:15.773Z
Reserved: 2026-11-04T12:05:51.303Z
Link: CVE-2026-121944
Updated: 2026-11-04T18:51:11.301Z
Status : Deferred
Published: 2026-11-04T13:17:29.123
Modified: 2026-11-04T19:17:34.800
Link: CVE-2026-121944
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