Bug 1954782 (CVE-2019-25036)
| Summary: | CVE-2019-25036 unbound: assertion failure and denial of service in synth_cname | ||
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| Product: | [Other] Security Response | Reporter: | Guilherme de Almeida Suckevicz <gsuckevi> |
| Component: | vulnerability | Assignee: | Red Hat Product Security <security-response-team> |
| Status: | CLOSED ERRATA | QA Contact: | |
| Severity: | medium | Docs Contact: | |
| Priority: | medium | ||
| Version: | unspecified | CC: | aegorenk, akhaitovich, paul.wouters, pemensik, pj.pandit |
| Target Milestone: | --- | Keywords: | Security |
| Target Release: | --- | ||
| Hardware: | All | ||
| OS: | Linux | ||
| Whiteboard: | |||
| Fixed In Version: | unbound 1.9.6 | Doc Type: | If docs needed, set a value |
| Doc Text: |
A flaw was found in unbound. A reachable assertion in the synth_cname function can be triggered by sending invalid packets to the server. If asserts are disabled during compilation, this issue might lead to an out-of-bounds write in dname_pkt_copy function. The highest threat from this vulnerability is to data confidentiality and integrity as well as service availability.
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Story Points: | --- |
| Clone Of: | Environment: | ||
| Last Closed: | 2021-05-18 20:39:03 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: | 1859933, 1968662, 1968663, 1968664 | ||
| Bug Blocks: | 1954811 | ||
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Description
Guilherme de Almeida Suckevicz
2021-04-28 18:46:15 UTC
I no longer have permission to close this bug, or see what is blocking this. But it's an old resolved issue Upstream patch: https://github.com/NLnetLabs/unbound/commit/f5e06689d193619c57c33270c83f5e40781a261d Statement: This issue could not be triggered by running unbound regularly, but only by injecting the packet directly to the vulnerable function through fuzzing. For this reason its Impact is Moderate. This issue has been addressed in the following products: Red Hat Enterprise Linux 8 Via RHSA-2021:1853 https://access.redhat.com/errata/RHSA-2021:1853 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-2019-25036 This issue has been addressed in the following products: Red Hat Enterprise Linux 8.2 Extended Update Support Via RHSA-2022:0632 https://access.redhat.com/errata/RHSA-2022:0632 |