# CVE-2020-12460: libopendmarc2: OpenDMARC through 1.3.2 and 1.4.x through 1.4.0-Beta1 has improper null termination in the function opendmarc_xml_par...

CVE-2020-12460 is fixed in 3 products on 1 platform, first by libopendmarc2 1.3.2-3ubuntu0.2, released July 27, 2020. It is not reported as exploited. Patch Radar priority: Routine.

- Web page: https://patchblox.com/security/cve/CVE-2020-12460
- Priority: Routine
- CVSS: n/a (Medium)
- EPSS: 0.0368
- CISA KEV: not listed
- Exploited (vendor report): no
- Publicly disclosed: no
- Published: Jul 27, 2020

## Description

OpenDMARC through 1.3.2 and 1.4.x through 1.4.0-Beta1 has improper null termination in the function opendmarc_xml_parse that can result in a one-byte heap overflow in opendmarc_xml when parsing a specially crafted DMARC aggregate report. This can cause remote memory corruption when a '\0' byte overwrites the heap metadata of the next chunk and its PREV_INUSE flag.

## Where it's fixed

| Platform | Product | Fixed in | Fix | Released |
|---|---|---|---|---|
| Linux | libopendmarc2 Ubuntu 18.04.6 LTS (bionic) | 1.3.2-3ubuntu0.2 | [libopendmarc2 1.3.2-3ubuntu0.2](https://patchblox.com/security/data/fix/linux/ubuntu-bionic-libopendmarc2-1.3.2-3ubuntu0.2.md) | Jul 27, 2020 |
| Linux | libopendmarc2 Ubuntu 20.04 LTS (focal) | 1.3.2-7ubuntu0.1 | [libopendmarc2 1.3.2-7ubuntu0.1](https://patchblox.com/security/data/fix/linux/ubuntu-focal-libopendmarc2-1.3.2-7ubuntu0.1.md) | Jul 27, 2020 |
| Linux | opendmarc Ubuntu 18.04.6 LTS (bionic) | 1.3.2-3ubuntu0.2 | [opendmarc 1.3.2-3ubuntu0.2](https://patchblox.com/security/data/fix/linux/ubuntu-bionic-opendmarc-1.3.2-3ubuntu0.2.md) | Jul 27, 2020 |
| Linux | opendmarc Ubuntu 20.04 LTS (focal) | 1.3.2-7ubuntu0.1 | [opendmarc 1.3.2-7ubuntu0.1](https://patchblox.com/security/data/fix/linux/ubuntu-focal-opendmarc-1.3.2-7ubuntu0.1.md) | Jul 27, 2020 |
| Linux | rddmarc Ubuntu 18.04.6 LTS (bionic) | 1.3.2-3ubuntu0.2 | [rddmarc 1.3.2-3ubuntu0.2](https://patchblox.com/security/data/fix/linux/ubuntu-bionic-rddmarc-1.3.2-3ubuntu0.2.md) | Jul 27, 2020 |

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Data as of 2026-11-08T00:53:09Z UTC. Source: Patchblox Patch Radar (https://patchblox.com/security/patch-radar). Patchblox finds out-of-date software on Windows, macOS and Linux and updates it through release rings: https://patchblox.com/demo

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