Bug 1966240 (CVE-2021-3570)
| Summary: | CVE-2021-3570 linuxptp: missing length check of forwarded messages | ||
|---|---|---|---|
| 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: | high | Docs Contact: | |
| Priority: | high | ||
| Version: | unspecified | CC: | mlichvar, omejzlik, security-response-team, yalli |
| Target Milestone: | --- | Keywords: | Security |
| Target Release: | --- | ||
| Hardware: | All | ||
| OS: | Linux | ||
| Whiteboard: | |||
| Fixed In Version: | linuxptp 3.1.1, linuxptp 2.0.1, linuxptp 1.9.3, linuxptp 1.8.1, linuxptp 1.7.1, linuxptp 1.6.1, linuxptp 1.5.1 | Doc Type: | If docs needed, set a value |
| Doc Text: |
A flaw was found in the ptp4l program of the linuxptp package. A missing length check when forwarding a PTP message between ports allows a remote attacker to cause an information leak, crash, or potentially remote code execution. The highest threat from this vulnerability is to data confidentiality and integrity as well as system availability.
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Story Points: | --- |
| Clone Of: | Environment: | ||
| Last Closed: | 2021-07-06 16:40:27 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: | 1966504, 1966505, 1966506, 1966507, 1966516, 1966524, 1979399 | ||
| Bug Blocks: | 1966236, 1966242 | ||
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Description
Guilherme de Almeida Suckevicz
2021-05-31 17:28:48 UTC
Upstream fix: https://sourceforge.net/p/linuxptp/code/ci/a1e63aa3a7304647913707c4df01f3df430806ab [master] https://sourceforge.net/p/linuxptp/code/ci/ce15e4de5926724557e8642ec762a210632f15ca [v3.1.1] https://sourceforge.net/p/linuxptp/code/ci/943ff3591412c232e6499ee9ddb846ef1a62bd4b [v2.0.1] https://sourceforge.net/p/linuxptp/code/ci/c15da0756d9b0ad9c0b9307c4a8685b490b76485 [v1.9.3] https://sourceforge.net/p/linuxptp/code/ci/7795df89dd4f94e0f55959dc61a85535d0f01cae [v1.8.1] https://sourceforge.net/p/linuxptp/code/ci/4a9eefe0066af7de94685d84150e00d2107423dd [v1.7.1] https://sourceforge.net/p/linuxptp/code/ci/7316ed7e5bf7998860246bc9c915cedc1b2e3f1a [v1.6.1] https://sourceforge.net/p/linuxptp/code/ci/77e7abd7e9b0f480372989848541ddf8cb0350aa [v1.5.1] Created linuxptp tracking bugs for this issue: Affects: fedora-all [bug 1979399] The length of a PTP message is determined by the message type and the appended TLVs. The current implementation validates the sizes of both the main message (according to the fixed header length and fixed length by type) and the TLVs (by using the 'L' of the TLV). However, when forwarding a message, the messageLength field is used. If a message arrives with a messageLength field larger than the actual message size, the code will read and possibly write data beyond the allocated buffer. This issue has been addressed in the following products: Red Hat Enterprise Linux 8.1 Extended Update Support Via RHSA-2021:2659 https://access.redhat.com/errata/RHSA-2021:2659 This issue has been addressed in the following products: Red Hat Enterprise Linux 8.2 Extended Update Support Via RHSA-2021:2657 https://access.redhat.com/errata/RHSA-2021:2657 This issue has been addressed in the following products: Red Hat Enterprise Linux 8 Via RHSA-2021:2660 https://access.redhat.com/errata/RHSA-2021:2660 This issue has been addressed in the following products: Red Hat Enterprise Linux 7 Via RHSA-2021:2658 https://access.redhat.com/errata/RHSA-2021:2658 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-2021-3570 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-2021-3570 |