libssh2: integer overflow in kex_method_diffie_hellman_group_exchange_sha256_key_exchange in kex.c leads to out-of-bounds write
Published Jul 16, 2019
8.1
HIGHCVSS 3.1
EPSS 11.66%
Description
In libssh2 before 1.9.0, kex_method_diffie_hellman_group_exchange_sha256_key_exchange in kex.c has an integer overflow that could lead to an out-of-bounds read in the way packets are read from the server. A remote attacker who compromises a 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. This is related to an _libssh2_check_length mistake, and is different from the various issues fixed in 1.8.1, such as CVE-2019-3855.
Affected products
No data.
Configuration 2
- 8.0
- 9.0
Configuration 3
- 29
- 30
Configuration 4
- n/a
- ≥ 11.0.0 · ≤ 11.70.1
- n/a
Configuration 5
- ≥ 5.0.0 · ≤ 5.1.0
No data.
Red Hat Enterprise Linux 6
libssh2
Out of support scope
Red Hat Enterprise Linux 7
libssh2
Will not fix
Red Hat Enterprise Linux 8
virt:rhel/libssh2
Not affected
Red Hat Enterprise Linux 8 Advanced Virtualization
virt:8.0.0/libssh2
Will not fix
| Product | Package | State | Advisory |
|---|---|---|---|
| Red Hat Enterprise Linux 6 | libssh2 | Out of support scope | n/a |
| Red Hat Enterprise Linux 7 | libssh2 | Will not fix | n/a |
| Red Hat Enterprise Linux 8 | virt:rhel/libssh2 | Not affected | n/a |
| Red Hat Enterprise Linux 8 Advanced Virtualization | virt:8.0.0/libssh2 | Will not fix | n/a |
No package ranges for this CVE.
Remediation
No remediation recorded yet.
References (19)
- http://packetstormsecurity.com/files/172834/libssh2-1.8.2-Out-Of-Bounds-Read.html
- https://access.redhat.com/security/cve/CVE-2019-13115 Vendor Advisory
- https://blog.semmle.com/libssh2-integer-overflow/ ExploitThird Party Advisory
- https://bugzilla.redhat.com/show_bug.cgi?id=1731324 Issue Tracking
- https://github.com/libssh2/libssh2/compare/02ecf17...42d37aa Third Party Advisory
- https://github.com/libssh2/libssh2/pull/350 Issue TrackingThird Party Advisory
- https://libssh2.org/changes.html Release NotesVendor Advisory
- https://lists.apache.org/thread.html/r58af02e294bd07f487e2c64ffc0a29b837db5600e33b6e698b9d696b%40%3Cissues.bookkeeper.apache.org%3E mailing-list
- https://lists.apache.org/thread.html/rf4c02775860db415b4955778a131c2795223f61cb8c6a450893651e4%40%3Cissues.bookkeeper.apache.org%3E mailing-list
- https://lists.debian.org/debian-lts-announce/2019/07/msg00024.html mailing-listMailing ListThird Party Advisory
- https://lists.debian.org/debian-lts-announce/2021/12/msg00013.html mailing-listMailing ListThird Party Advisory
- https://lists.debian.org/debian-lts-announce/2023/09/msg00006.html mailing-list
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/6LUNHPW64IGCASZ4JQ2J5KDXNZN53DWW/ vendor-advisory
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/M7IF3LNHOA75O4WZWIHJLIRMA5LJUED3/ vendor-advisory
- https://nvd.nist.gov/vuln/detail/CVE-2019-13115
- https://security.netapp.com/advisory/ntap-20190806-0002/ Third Party Advisory
- https://support.f5.com/csp/article/K13322484 Third Party Advisory
- https://support.f5.com/csp/article/K13322484?utm_source=f5support&%3Butm_medium=RSS
- https://www.cve.org/CVERecord?id=CVE-2019-13115
Change history (0)
No recorded changes yet.