# CVE-2020-14928: Other in n/a > Attackers can inject responses into SMTP or POP3 connections by exploiting a STARTTLS buffering flaw in Evolution Data Server. - **Severity:** Medium 5.9 (`CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:H/A:N`) - **Exploited in the wild:** Not known - **Login needed:** Not needed - **Attackable:** Over the internet - **Victim action needed:** Not needed - **Fix available:** Yes - **Published:** 17 Jul 2020 - **Updated:** 4 Aug 2024 - **Also known as:** ALSA-2020:4649, DEBIAN-CVE-2020-14928, DLA-2281-1, DSA-4725-1, GHSA-3rg7-72j5-5xpv, OESA-2022-1785, RHSA-2020:4649, RLSA-2020:4649, UBUNTU-CVE-2020-14928, USN-4429-1 ## What is CVE-2020-14928? CVE-2020-14928 is a medium-severity vulnerability in Canonical Ubuntu Linux, published on 17 Jul 2020. An attacker can exploit it over the internet without logging in, with no action from the victim. ### Official description evolution-data-server (eds) through 3.36.3 has a STARTTLS buffering issue that affects SMTP and POP3. When a server sends a "begin TLS" response, eds reads additional data and evaluates it in a TLS context, aka "response injection." Weakness: CWE-74 (Improper Neutralization of Special Elements in Output Used by a Downstream Component) ## Which versions are affected by CVE-2020-14928? It affects 4 products. | Package | Ecosystem | Affected | Fixed in | | --- | --- | --- | --- | | `bogofilter` | AlmaLinux:8 | All versions | 1.2.5-2.el8 | | `evolution-data-server-doc` | AlmaLinux:8 | All versions | 3.28.5-14.el8 | | `evolution-data-server-perl` | AlmaLinux:8 | All versions | 3.28.5-14.el8 | | `evolution-data-server-tests` | AlmaLinux:8 | All versions | 3.28.5-14.el8 | | `evolution-devel` | AlmaLinux:8 | All versions | 3.28.5-14.el8 | | `bogofilter` | Red Hat:enterprise_linux:8::appstream | All versions | 0:1.2.5-2.el8 | | `bogofilter-debuginfo` | Red Hat:enterprise_linux:8::appstream | All versions | 0:1.2.5-2.el8 | | `bogofilter-debugsource` | Red Hat:enterprise_linux:8::appstream | All versions | 0:1.2.5-2.el8 | | `evolution` | Red Hat:enterprise_linux:8::appstream | All versions | 0:3.28.5-14.el8 | | `evolution-bogofilter` | Red Hat:enterprise_linux:8::appstream | All versions | 0:3.28.5-14.el8 | | `evolution-bogofilter-debuginfo` | Red Hat:enterprise_linux:8::appstream | All versions | 0:3.28.5-14.el8 | | `evolution-data-server` | Red Hat:enterprise_linux:8::appstream | All versions | 0:3.28.5-14.el8 | | `evolution-data-server-debuginfo` | Red Hat:enterprise_linux:8::appstream | All versions | 0:3.28.5-14.el8 | | `evolution-data-server-debugsource` | Red Hat:enterprise_linux:8::appstream | All versions | 0:3.28.5-14.el8 | | `evolution-data-server-devel` | Red Hat:enterprise_linux:8::appstream | All versions | 0:3.28.5-14.el8 | | `evolution-data-server-langpacks` | Red Hat:enterprise_linux:8::appstream | All versions | 0:3.28.5-14.el8 | | `evolution-data-server-tests-debuginfo` | Red Hat:enterprise_linux:8::appstream | All versions | 0:3.28.5-14.el8 | | `evolution-debuginfo` | Red Hat:enterprise_linux:8::appstream | All versions | 0:3.28.5-14.el8 | | `evolution-debugsource` | Red Hat:enterprise_linux:8::appstream | All versions | 0:3.28.5-14.el8 | | `evolution-help` | Red Hat:enterprise_linux:8::appstream | All versions | 0:3.28.5-14.el8 | | `evolution-langpacks` | Red Hat:enterprise_linux:8::appstream | All versions | 0:3.28.5-14.el8 | | `evolution-mapi` | Red Hat:enterprise_linux:8::appstream | All versions | 0:3.28.3-3.el8 | | `evolution-mapi-debuginfo` | Red Hat:enterprise_linux:8::appstream | All versions | 0:3.28.3-3.el8 | | `evolution-mapi-debugsource` | Red Hat:enterprise_linux:8::appstream | All versions | 0:3.28.3-3.el8 | | `evolution-mapi-langpacks` | Red Hat:enterprise_linux:8::appstream | All versions | 0:3.28.3-3.el8 | | `evolution-pst` | Red Hat:enterprise_linux:8::appstream | All versions | 0:3.28.5-14.el8 | | `evolution-pst-debuginfo` | Red Hat:enterprise_linux:8::appstream | All versions | 0:3.28.5-14.el8 | | `evolution-spamassassin` | Red Hat:enterprise_linux:8::appstream | All versions | 0:3.28.5-14.el8 | | `evolution-spamassassin-debuginfo` | Red Hat:enterprise_linux:8::appstream | All versions | 0:3.28.5-14.el8 | | `openchange` | Red Hat:enterprise_linux:8::appstream | All versions | 0:2.3-26.el8 | | `openchange-client-debuginfo` | Red Hat:enterprise_linux:8::appstream | All versions | 0:2.3-26.el8 | | `openchange-debuginfo` | Red Hat:enterprise_linux:8::appstream | All versions | 0:2.3-26.el8 | | `openchange-debugsource` | Red Hat:enterprise_linux:8::appstream | All versions | 0:2.3-26.el8 | | `evolution-bogofilter-debuginfo` | Red Hat:enterprise_linux:8::crb | All versions | 0:3.28.5-14.el8 | | `evolution-data-server-debuginfo` | Red Hat:enterprise_linux:8::crb | All versions | 0:3.28.5-14.el8 | | `evolution-data-server-debugsource` | Red Hat:enterprise_linux:8::crb | All versions | 0:3.28.5-14.el8 | | `evolution-data-server-doc` | Red Hat:enterprise_linux:8::crb | All versions | 0:3.28.5-14.el8 | | `evolution-data-server-perl` | Red Hat:enterprise_linux:8::crb | All versions | 0:3.28.5-14.el8 | | `evolution-data-server-tests` | Red Hat:enterprise_linux:8::crb | All versions | 0:3.28.5-14.el8 | | `evolution-data-server-tests-debuginfo` | Red Hat:enterprise_linux:8::crb | All versions | 0:3.28.5-14.el8 | Products: Canonical Ubuntu Linux, Debian Debian Linux, Fedoraproject Fedora, Gnome Evolution-Data-Server. ## How do I fix CVE-2020-14928? Apply the vendor's patch. ## Is CVE-2020-14928 being exploited? There is no known exploitation of CVE-2020-14928 in the wild and no public exploit code. ## Other vulnerabilities in Canonical Ubuntu Linux - [CVE-2020-11651](https://insights.sbomify.com/CVE-2020-11651/): SaltStack Salt Authentication Bypass (critical 9.8, exploited in the wild) - [CVE-2020-7247](https://insights.sbomify.com/CVE-2020-7247/): OpenSMTPD Remote Code Execution (critical 9.8, exploited in the wild) - [CVE-2019-16928](https://insights.sbomify.com/CVE-2019-16928/): Exim Out-of-bounds Write (critical 9.8, exploited in the wild) - [CVE-2018-6789](https://insights.sbomify.com/CVE-2018-6789/): Exim Buffer Overflow (critical 9.8, exploited in the wild) - [CVE-2015-2590](https://insights.sbomify.com/CVE-2015-2590/): Oracle Java SE and Java SE Embedded Remote Code Execution (critical 9.8, exploited in the wild) ## Fix prompt for AI coding agents ```text Check this codebase for CVE-2020-14928 and fix it if it is affected. What it is: CVE-2020-14928 is a medium-severity vulnerability in Canonical Ubuntu Linux, published on 17 Jul 2020. An attacker can exploit it over the internet without logging in, with no action from the victim. Exploitation: There is no known exploitation of CVE-2020-14928 in the wild and no public exploit code. Affected product: Canonical Ubuntu Linux. No package-level version data is available, so check the vendor advisory linked from the reference page. Task: 1. Search the dependency manifests and lockfiles (for example package.json, package-lock.json, requirements.txt, poetry.lock, uv.lock, pom.xml, build.gradle, go.mod, Cargo.lock, Gemfile.lock) and any Dockerfiles for the affected packages, including transitive dependencies. 2. If an affected version is in use, upgrade it to the fixed version for its release line with the project's package manager, so the lockfile is regenerated. Prefer the smallest upgrade that fixes it. 3. If there is no fix, or the upgrade would break the build, do not guess: explain the risk and the safest workaround instead. 4. Run the tests and summarise what changed and why. 5. If nothing in the project is affected, say so and change nothing. Reference: https://insights.sbomify.com/CVE-2020-14928/ (Markdown: https://insights.sbomify.com/CVE-2020-14928/index.md) ``` ## Sources - CVE record: https://www.cve.org/CVERecord?id=CVE-2020-14928 - NVD: https://nvd.nist.gov/vuln/detail/CVE-2020-14928 - OSV: https://osv.dev/vulnerability/CVE-2020-14928 --- From sbomify Insights: https://insights.sbomify.com/CVE-2020-14928/ Summaries are generated and may contain mistakes; the official description above is the record.