CVE-2019-17498
- Source
- https://nvd.nist.gov/vuln/detail/CVE-2019-17498
- Import Source
- https://storage.googleapis.com/osv-test-cve-osv-conversion/osv-output/CVE-2019-17498.json
- JSON Data
- https://api.test.osv.dev/v1/vulns/CVE-2019-17498
- Downstream
- Related
- Published
- 2019-10-21T22:15:10Z
- Modified
- 2025-09-19T10:46:24.165750Z
- Severity
-
- 8.1 (High) CVSS_V3 - CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:H CVSS Calculator
- Summary
- [none]
- Details
-
In libssh2 v1.9.0 and earlier versions, the SSHMSGDISCONNECT logic in packet.c has an integer overflow in a bounds check, enabling an attacker to specify an arbitrary (out-of-bounds) offset for a subsequent memory read. A crafted SSH server may be able to disclose sensitive information or cause a denial of service condition on the client system when a user connects to the server.
- References
-
- http://lists.opensuse.org/opensuse-security-announce/2019-11/msg00026.html
- https://github.com/kevinbackhouse/SecurityExploits/tree/8cbdbbe6363510f7d9ceec685373da12e6fc752d/libssh2/out_of_bounds_read_disconnect_CVE-2019-17498
- https://github.com/libssh2/libssh2/blob/42d37aa63129a1b2644bf6495198923534322d64/src/packet.c#L480
- https://github.com/libssh2/libssh2/commit/dedcbd106f8e52d5586b0205bc7677e4c9868f9c
- https://lists.debian.org/debian-lts-announce/2019/11/msg00010.html
- https://lists.debian.org/debian-lts-announce/2021/12/msg00013.html
- https://security.netapp.com/advisory/ntap-20220909-0004/
- https://blog.semmle.com/libssh2-integer-overflow-CVE-2019-17498/
- http://packetstormsecurity.com/files/172835/libssh2-1.9.0-Out-Of-Bounds-Read.html
- https://lists.debian.org/debian-lts-announce/2023/09/msg00006.html
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/22H4Q5XMGS3QNSA7OCL3U7UQZ4NXMR5O/
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/TY7EEE34RFKCTXTMBQQWWSLXZWSCXNDB/
- https://security.alpinelinux.org/vuln/CVE-2019-17498
Affected packages
Alpine:v3.10
libssh2
Alpine:v3.11
libssh2
Alpine:v3.12
libssh2
Alpine:v3.13
libssh2
Alpine:v3.14
libssh2
Alpine:v3.15
libssh2
Alpine:v3.16
libssh2
Alpine:v3.17
libssh2
Alpine:v3.18
libssh2
Alpine:v3.19
libssh2
Alpine:v3.20
libssh2
Alpine:v3.21
libssh2
Alpine:v3.22
libssh2
Alpine:v3.9
libssh2
Git
github.com/libssh2/libssh2
Affected ranges
- Type
- GIT
- Repo
- https://github.com/libssh2/libssh2
- Events
-
Introduced0 Unknown introduced commit / All previous commits are affectedFixed
Affected versions
RELEASE.*
RELEASE.0.1
RELEASE.0.10
RELEASE.0.11
RELEASE.0.12
RELEASE.0.13
RELEASE.0.14
RELEASE.0.15
RELEASE.0.16
RELEASE.0.17
RELEASE.0.18
RELEASE.0.3
RELEASE.0.5
RELEASE.0.6
RELEASE.0.7
RELEASE.0.8
RELEASE.1.0
RELEASE.1.1
beforenb-0.*
beforenb-0.14
beforenb2-0.*
beforenb2-0.14
libssh2-1.*
libssh2-1.2
libssh2-1.2.1
libssh2-1.2.2
libssh2-1.2.3
libssh2-1.2.4
libssh2-1.2.5
libssh2-1.2.6
libssh2-1.2.7
libssh2-1.2.8
libssh2-1.2.9
libssh2-1.3.0
libssh2-1.4.0
libssh2-1.4.1
libssh2-1.4.2
libssh2-1.4.3
libssh2-1.5.0
libssh2-1.6.0
libssh2-1.7.0
libssh2-1.8.0
libssh2-1.9.0
Database specific
{
"vanir_signatures": [
{
"source": "https://github.com/libssh2/libssh2/commit/dedcbd106f8e52d5586b0205bc7677e4c9868f9c",
"signature_version": "v1",
"signature_type": "Function",
"deprecated": false,
"target": {
"file": "src/packet.c",
"function": "_libssh2_packet_add"
},
"digest": {
"function_hash": "261505088534266311445285255293331755792",
"length": 12097.0
},
"id": "CVE-2019-17498-4ecb2cf7"
},
{
"source": "https://github.com/libssh2/libssh2/commit/dedcbd106f8e52d5586b0205bc7677e4c9868f9c",
"signature_version": "v1",
"signature_type": "Line",
"deprecated": false,
"target": {
"file": "src/packet.c"
},
"digest": {
"line_hashes": [
"134169250891193118529304932879379553847",
"205310250524678314934555577121318039325",
"153129567552562233549023166857273037888",
"178571371398251300229519893039166702638",
"72145293158586770308147922030597846856",
"26729110877010587858654623724348773108",
"49362216656574584973624410357610951344",
"321298245864012238897609765862223817780",
"35928507602771519079905685860166519231",
"154500373189842991817102946133806428940",
"165260082386745301364993297193505505821",
"224084172619535272672790341246973090398",
"5356660278860416646992393454495665580",
"215185288519949424268549841841085459888",
"41027521565758756400721139453438296743",
"261770080105454089080864056643957326646",
"112577356930656868917282695859156546607",
"266091588552765774451985637383685229894",
"161769171353065646776261864065306578590",
"106289505878685820278644300603721530175",
"239192671667185276821494449931361882054",
"119841806266198942322557246315210598842",
"185703913995006478349460337437414305001",
"162441443838476641014842705979708130684",
"183245701107550523990847736687199011265",
"50426275079859766355449435496213490799",
"324037346491845418402829931648401701867",
"179688840526055267239603553007128508269",
"264669166455797101183041518857048771469",
"44646834277421589325966971756374060949",
"82508341436968592692150147669647547214",
"79003347772182151645683941089650774376",
"249863810074470457690593679896838544992",
"253210672333095990954285753391413575534",
"336128189688039022752011594700859913608",
"153291091772006957249977471727743164452",
"23965398749853137458110744797193196914",
"269605763674799612557017037989398087974",
"29582490785044912089364730362447932295",
"258315015777790198444196601037297632797",
"152978136810771868822522218180542514737",
"57312958982436694499078779749389722939",
"57734602486406847187201186044700211719",
"51438989373981932051151411266176576083",
"61635492046474294702511841284264092832",
"219459798151302566118951099564811896122",
"141584221698062118268403157313352537570",
"303446371127046191600335366631671521471",
"114603074537250694026974277582493472820"
],
"threshold": 0.9
},
"id": "CVE-2019-17498-53d4378e"
}
]
}