Bug 1919917 (CVE-2020-26419)
| Summary: | CVE-2020-26419 wireshark: multiple dissector memory leaks (wnpa-sec-2020-19) | ||
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| Product: | [Other] Security Response | Reporter: | Dhananjay Arunesh <darunesh> |
| Component: | vulnerability | Assignee: | Red Hat Product Security <security-response-team> |
| Status: | CLOSED NOTABUG | QA Contact: | |
| Severity: | low | Docs Contact: | |
| Priority: | low | ||
| Version: | unspecified | CC: | alekcejk, denis, huzaifas, lemenkov, mruprich, msehnout, peter, rvokal, sergey.avseyev |
| Target Milestone: | --- | Keywords: | Security |
| Target Release: | --- | ||
| Hardware: | All | ||
| OS: | Linux | ||
| Whiteboard: | |||
| Fixed In Version: | wireshark 3.4.1 | Doc Type: | If docs needed, set a value |
| Doc Text: |
A memory leak was discovered in Wireshark while decoding packets captured in a pcap file or coming from the network. Multiple packet dissectors are potentially affected by this issue. A remote attacker may abuse this flaw by sending specially crafted packets that, when processed, would make Wireshark consume excessive CPU resources resulting in a denial of service. The highest threat from this vulnerability is to system availability.
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Story Points: | --- |
| Clone Of: | Environment: | ||
| Last Closed: | 2021-02-01 20:41:43 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: | 1919918 | ||
| Bug Blocks: | 1919925 | ||
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Description
Dhananjay Arunesh
2021-01-25 11:55:41 UTC
Created wireshark tracking bugs for this issue: Affects: fedora-all [bug 1919918] Upstream fix: https://gitlab.com/wireshark/wireshark/-/commit/a9fc769d7bb4b491efb61c699d57c9f35269d871 External References: https://www.wireshark.org/security/wnpa-sec-2020-19 Statement: This issue does not affect the versions of `wireshark` as shipped with Red Hat Enterprise Linux 5, 6, 7, and 8, as the vulnerable code was introduced in a newer version of the package. 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-2020-26419 In reply to comment #4: > This issue does not affect the versions of `wireshark` as shipped with Red > Hat Enterprise Linux 5, 6, 7, and 8, as the vulnerable code was introduced > in a newer version of the package. Specifically, it looks like the vulnerable code in _proto_tree_add_bits_ret_val() was introduced in version 3.4.0 via the following commit: https://gitlab.com/wireshark/wireshark/-/commit/0ceb46e1c2 RHEL-8 ships an older version of wireshark (2.6) which is not affected by this flaw. |