CVE-2020-24387
published 2020-10-19CVE-2020-24387: An issue was discovered in the yh_create_session() function of yubihsm-shell through 2.0.2. The function does not explicitly check the returned session id from…
PriorityP338high7.5CVSS 3.1
AVNACLPRNUINSUCNINAH
EPSS
1.75%
75.4th percentile
An issue was discovered in the yh_create_session() function of yubihsm-shell through 2.0.2. The function does not explicitly check the returned session id from the device. An invalid session id would lead to out-of-bounds read and write operations in the session array. This could be used by an attacker to cause a denial of service attack.
Affected
2 ranges
| Vendor | Product | Version range | Fixed in |
|---|---|---|---|
| fedoraproject | fedora | — | — |
| yubico | yubihsm-shell | <= 2.0.2 | — |
CVSS provenance
nvdv3.17.5HIGHCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
nvdv2.05.0MEDIUMAV:N/AC:L/Au:N/C:N/I:N/A:P
Stop checking back — get the weekly exploitation signal.
Every Monday: what got weaponized or added to CISA KEV in the last seven days — each CVE cross-linked to its PoC, Nuclei template, and detection rule. Free, one email a week, unsubscribe in one click.
No detection rules found.
No public exploits indexed.
Bugzilla
CVE-2020-24387 yubihsm-shell: yh_create_session() does not explicitly check the returned session id could result in DoS
bugzilla·2020-10-21·CVSS 7.5
CVE-2020-24387 [HIGH] CVE-2020-24387 yubihsm-shell: yh_create_session() does not explicitly check the returned session id could result in DoS
CVE-2020-24387 yubihsm-shell: yh_create_session() does not explicitly check the returned session id could result in DoS
An issue was discovered in the yh_create_session() function of yubihsm-shell through 2.0.2. The function does not explicitly check the returned session id from the device. An invalid session id would lead to out-of-bounds read and write operations in the session array. This could be used by an attacker to cause a denial of service attack.
References:
https://blog.inhq.net/posts/yubico-libyubihsm-vuln/
https://developers.yubico.com/yubihsm-shell/
https://github.com/Yubico/yubihsm-shell
https://www.yubico.com/support/security-advisories/ysa-2020-06/
Bugzilla
CVE-2020-24387 yubihsm-shell: yh_create_session() does not explicitly check the returned session id could result in DoS [fedora-all]
bugzilla·2020-10-21·CVSS 7.5
CVE-2020-24387 [HIGH] CVE-2020-24387 yubihsm-shell: yh_create_session() does not explicitly check the returned session id could result in DoS [fedora-all]
CVE-2020-24387 yubihsm-shell: yh_create_session() does not explicitly check the returned session id could result in DoS [fedora-all]
This is an automatically created tracking bug! It was created to ensure
that one or more security vulnerabilities are fixed in affected versions
of fedora-all.
For comments that are specific to the vulnerability please use bugs filed
against the "Security Response" product referenced in the "Blocks" field.
For more information see:
http://fedoraproject.org/wiki/Security/TrackingBugs
When submitting as an update, use the fedpkg template provided in the next
comment(s). This will include the bug IDs of this tracking bug as well as
the relevant top-level CVE bugs.
Please also mention the CVE IDs being fixed in the RPM changelog and the
fedpkg commit message
https://blog.inhq.net/posts/yubico-libyubihsm-vuln/https://developers.yubico.com/yubihsm-shell/https://github.com/Yubico/yubihsm-shellhttps://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/Y77KQJW76M3PFOBFLBT6DLH2NWHYRNZO/https://www.yubico.com/support/security-advisories/ysa-2020-06/https://blog.inhq.net/posts/yubico-libyubihsm-vuln/https://developers.yubico.com/yubihsm-shell/https://github.com/Yubico/yubihsm-shellhttps://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/Y77KQJW76M3PFOBFLBT6DLH2NWHYRNZO/https://www.yubico.com/support/security-advisories/ysa-2020-06/
2020-10-19
Published