ALT-PU-2025-12129-3

Package update libssh in branch sisyphus

Version0.11.3-alt1

Published2026-02-04

Max severityMEDIUM

Severity:

Closed issues (4)

MEDIUM4.7

Уязвимость библиотеки libssh, связанная с разыменованием нулевого указателя, позволяющая нарушителю вызвать отказ в обслуживании

Published: 2025-09-29Modified: 2026-03-02

CVSS 3.xMEDIUM 4.7

CVSS:3.x/AV:L/AC:H/PR:L/UI:N/S:U/C:N/I:N/A:H

CVSS 2.0LOW 3.8

CVSS:2.0/AV:L/AC:H/Au:S/C:N/I:N/A:C

References

CVE-2025-8114

LOW3.1

Уязвимость функции first_kex_packet_follows() библиотеки libssh, позволяющая нарушителю вызвать отказ в обслуживании

Published: 2025-11-07Modified: 2026-05-06

CVSS 3.xLOW 3.1

CVSS:3.x/AV:N/AC:H/PR:L/UI:N/S:U/C:N/I:N/A:L

CVSS 2.0LOW 2.1

CVSS:2.0/AV:N/AC:H/Au:S/C:N/I:N/A:P

References

CVE-2025-8277

MEDIUM4.7

A flaw was found in libssh, a library that implements the SSH protocol. When calculating the session ID during the key exchange (KEX) process, an allocation failure in cryptographic functions may lead to a NULL pointer dereference. This issue can cause the client or server to crash.

Published: 2025-07-24Modified: 2025-11-17

CVSS 3.xMEDIUM 4.7

CVSS:3.x/CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:N/I:N/A:H

References

LOW3.1

A flaw was found in libssh's handling of key exchange (KEX) processes when a client repeatedly sends incorrect KEX guesses. The library fails to free memory during these rekey operations, which can gradually exhaust system memory. This issue can lead to crashes on the client side, particularly when using libgcrypt, which impacts application stability and availability.

Published: 2025-09-09Modified: 2026-04-15

CVSS 3.xLOW 3.1

CVSS:3.x/CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:N/I:N/A:L

References