Bug 2189736 (CVE-2023-2283)
| Summary: | CVE-2023-2283 libssh: authorization bypass in pki_verify_data_signature | ||
|---|---|---|---|
| Product: | [Other] Security Response | Reporter: | Sandipan Roy <saroy> |
| Component: | vulnerability | Assignee: | Red Hat Product Security <security-response-team> |
| Status: | CLOSED ERRATA | QA Contact: | |
| Severity: | medium | Docs Contact: | |
| Priority: | medium | ||
| Version: | unspecified | CC: | acrosby, adudiak, akarol, ansasaki, aoconnor, bdettelb, caswilli, dffrench, dhalasz, dkuc, dmetzger, fjansen, gmccullo, gtanzill, gzaronik, hbraun, hkataria, ikanias, jary, jburrell, jhardy, jjelen, jkoehler, jmitchel, jsherril, jtanner, jwong, kaycoth, kdudka, kshier, micjohns, mpitt, ngough, npocs, nweather, oezr, psegedy, rgodfrey, roliveri, rravi, security-response-team, simaishi, smallamp, stcannon, sthirugn, tcarlin, tfister, tkasparek, tmeszaro, tohughes, tsasak, vkrizan, vmugicag, yguenane |
| Target Milestone: | --- | Keywords: | Security |
| Target Release: | --- | ||
| Hardware: | All | ||
| OS: | Linux | ||
| Whiteboard: | |||
| Fixed In Version: | Doc Type: | If docs needed, set a value | |
| Doc Text: |
A vulnerability was found in libssh, where the authentication check of the connecting client can be bypassed in the`pki_verify_data_signature` function in memory allocation problems. This issue may happen if there is insufficient memory or the memory usage is limited. The problem is caused by the return value `rc,` which is initialized to SSH_ERROR and later rewritten to save the return value of the function call `pki_key_check_hash_compatible.` The value of the variable is not changed between this point and the cryptographic verification. Therefore any error between them calls `goto error` returning SSH_OK.
|
Story Points: | --- |
| Clone Of: | Environment: | ||
| Last Closed: | 2023-06-27 19:45:50 UTC | Type: | --- |
| Regression: | --- | Mount Type: | --- |
| Documentation: | --- | CRM: | |
| Verified Versions: | Category: | --- | |
| oVirt Team: | --- | RHEL 7.3 requirements from Atomic Host: | |
| Cloudforms Team: | --- | Target Upstream Version: | |
| Embargoed: | |||
| Bug Depends On: | 2189740, 2189741, 2189742, 2196100, 2196101, 2196102, 2196103, 2196104 | ||
| Bug Blocks: | 2189609 | ||
|
Description
Sandipan Roy
2023-04-26 04:06:32 UTC
Created libssh tracking bugs for this issue: Affects: epel-7 [bug 2196100] Affects: fedora-all [bug 2196102] Created libssh2 tracking bugs for this issue: Affects: epel-8 [bug 2196101] Affects: fedora-all [bug 2196103] Created mingw-libssh2 tracking bugs for this issue: Affects: fedora-all [bug 2196104] This issue has been addressed in the following products: Red Hat Enterprise Linux 8 Via RHSA-2023:3839 https://access.redhat.com/errata/RHSA-2023:3839 This bug is now closed. Further updates for individual products will be reflected on the CVE page(s): https://access.redhat.com/security/cve/cve-2023-2283 This comment was flagged a spam, view the edit history to see the original text if required. This issue has been addressed in the following products: Red Hat Enterprise Linux 9 Via RHSA-2023:6643 https://access.redhat.com/errata/RHSA-2023:6643 This issue has been addressed in the following products: Red Hat Enterprise Linux 8.6 Extended Update Support Via RHSA-2024:0538 https://access.redhat.com/errata/RHSA-2024:0538 |