High
Security advisory
The read_packet function in knc (Kerberised NetCat) before 1.11-1 is vulnerable to denial of service (memory exhaustion) that can be exploited remotely without authentication, possibly affecting another services running on the targeted host.
- Products
- Not specified
- Affected versions
- Not specified
- Fixed versions
- Not specified
- CVEs
- CVE-2017-9732
- Confirmed fixed CVEs
- Not specified
- Updated in this feed
- 31 Oct 2026, 12:26 UTC · Revision 1
Source evidence
The read_packet function in knc (Kerberised NetCat) before 1.11-1 is vulnerable to denial of service (memory exhaustion) that can be exploited remotely without authentication, possibly affecting another services running on the targeted host.
osv:CVE-2017-9732
Complete source record
{
"id": "762fa5ba41ae76bf1b8d8b4fc7e2fd4e4b0645a5fdfe7555ff6eae16645304b9",
"url": "https://osv.dev/vulnerability/CVE-2017-9732",
"method": "structured",
"payload": {
"kind": "advisory",
"title": "CVE-2017-9732",
"summary": "The read_packet function in knc (Kerberised NetCat) before 1.11-1 is vulnerable to denial of service (memory exhaustion) that can be exploited remotely without authentication, possibly affecting another services running on the targeted host.",
"evidence": "osv:CVE-2017-9732",
"products": [],
"severity": "high",
"structured": {
"id": "CVE-2017-9732",
"aliases": [
"CVE-2017-9732"
],
"metrics": [
{
"type": "CVSS_V3",
"score": "CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H"
}
],
"affected": [
{
"ranges": [
{
"repo": "https://github.com/elric1/knc",
"type": "GIT",
"events": [
{
"introduced": "0"
},
{
"fixed": "f237f3e09ecbaf59c897f5046538a7b1a3fa40c1"
}
],
"database_specific": {
"extracted_events": [
{
"range": [
{
"fixed": "f237f3e09ecbaf59c897f5046538a7b1a3fa40c1"
}
],
"source": "REFERENCES_COMMIT"
}
]
}
}
],
"versions": [
"elric_sig_20130829155900",
"elric_sig_20130214153639",
"1.7.1",
"elric_sig_20120927180657",
"1.7",
"elric_sig_20120705171524",
"elric_sig_20120220115218",
"elric_sig_20111129153352",
"elric_sig_20111127173314",
"elric_sig_20111112000136",
"1.6.1",
"1.6"
],
"database_specific": {
"source": "https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2017-9732.json",
"vanir_signatures": [
{
"id": "CVE-2017-9732-37919fc3",
"digest": {
"length": 945,
"function_hash": "123800384529793006410117634612540534421"
},
"source": "https://github.com/elric1/knc/commit/f237f3e09ecbaf59c897f5046538a7b1a3fa40c1",
"target": {
"file": "bin/gssstdio.c",
"function": "gstd_accept"
},
"deprecated": false,
"signature_type": "Function",
"signature_version": "v1"
},
{
"id": "CVE-2017-9732-81592b9b",
"digest": {
"threshold": 0.9,
"line_hashes": [
"193799561628629852479905158744006122511",
"10597813081131531540646423760232605634",
"13573681778233594011506153502873435606",
"285112487704076807788069812916150694958",
"93295609652909022966029026078006397357",
"289242926332152215964813883197495632417",
"22590990038414799912061306650990009437",
"164423696563241641726662970012386914655",
"49947171259944620647834468293325178165",
"86890169374550955677045141749488235756",
"2895638651869158130765015203162897697",
"274561984334575226663321507064138975632",
"5757969317131918796589408999278329281",
"210938770927126775792901958772536434130",
"83331737250803275823573953085196139961",
"322191407948263273819520789056478452798",
"323576057902805582100152926152097203966",
"275401222835303868878633321197210292390",
"337215776742961844823239197230091682831",
"133270039927477131143880844442986168661",
"226026858247104887886310288651172892935",
"259179943245552260550822538766535424733",
"208231167390164692998667839998750530827",
"191379491175918729520835353402900443509",
"94804679831800844402563612168042448081",
"238416794821828689689489520802156602355",
"148707164122125843103861583319126903883",
"205539226584804908093314219838739033973",
"164423696563241641726662970012386914655",
"49947171259944620647834468293325178165",
"86890169374550955677045141749488235756",
"188110936949729058450265077228667690706",
"198523024209352012393123259534839309704",
"9019923645297037727063630572143203365",
"84799375509267989226819191491904897781",
"3870698890658043202180568282265758000",
"260546729310675582902553108396950718560",
"291054121200305771741495444056588044361",
"280905277838797282035067220239931704774",
"12959958512253090950050503865149492001"
]
},
"source": "https://github.com/elric1/knc/commit/f237f3e09ecbaf59c897f5046538a7b1a3fa40c1",
"target": {
"file": "bin/gssstdio.c"
},
"deprecated": false,
"signature_type": "Line",
"signature_version": "v1"
},
{
"id": "CVE-2017-9732-cb1fd364",
"digest": {
"length": 1457,
"function_hash": "165427235488136539998141578923711309738"
},
"source": "https://github.com/elric1/knc/commit/f237f3e09ecbaf59c897f5046538a7b1a3fa40c1",
"target": {
"file": "bin/gssstdio.c",
"function": "read_packet"
},
"deprecated": false,
"signature_type": "Function",
"signature_version": "v1"
}
],
"vanir_signatures_modified": "2026-10-20T13:33:47Z"
}
}
],
"modified": "2026-10-20T13:33:47.926971661Z",
"provider": "osv",
"references": [
"https://github.com/elric1/knc/commit/f237f3e09ecbaf59c897f5046538a7b1a3fa40c1",
"https://github.com/irsl/knc-memory-exhaustion/"
],
"provider_metadata": {
"unresolved_ranges": [
{
"cpes": [
"cpe:2.3:a:secure-endpoints:kerberised_netcat:*:*:*:*:*:*:*:*"
],
"vendor_product": "secure-endpoints:kerberised_netcat",
"extracted_events": [
{
"range": [
{
"fixed": "1.11-1"
}
],
"source": "CPE_RANGE"
}
]
},
{
"extracted_events": [
{
"range": [
{
"fixed": "1.11-1"
}
],
"source": "DESCRIPTION"
}
]
}
]
}
},
"related_cves": [
{
"value": "CVE-2017-9732",
"evidence": "/id"
}
],
"security_relevant": true,
"severity_evidence": "/severity/0/score"
},
"source_id": "core-osv",
"document_id": 387831,
"published_at": "2018-12-20T23:29:00.237+00:00"
}