# CVE-2021-22898: curl: fix TELNET stack contents disclosure

CVE-2021-22898 is fixed in 7 products on 1 platform, first by curl 7.58.0-2ubuntu3.14, released July 20, 2021. It is not reported as exploited. Patch Radar priority: Routine.

- Web page: https://patchblox.com/security/cve/CVE-2021-22898
- Priority: Routine
- CVSS: 3.1 (MODERATE)
- EPSS: 0.0451
- CISA KEV: not listed
- Exploited (vendor report): no
- Publicly disclosed: no
- Published: May 25, 2021

## Description

fix TELNET stack contents disclosure

## Where it's fixed

| Platform | Product | Fixed in | Fix | Released |
|---|---|---|---|---|
| Linux | curl Debian 11.6 (bullseye) | 7.74.0-1.3+deb11u2 | [DSA-5197-1](https://patchblox.com/security/data/fix/linux/dsa-5197-1.md) | Aug 1, 2022 |
| Linux | curl RHEL 8 | 0:7.61.1-22.el8 | [RHSA-2021:4511](https://patchblox.com/security/data/fix/linux/rhsa-2021-4511.md) | Nov 9, 2021 |
| Linux | curl Ubuntu 18.04.6 LTS (bionic) | 7.58.0-2ubuntu3.14 | [curl 7.58.0-2ubuntu3.14](https://patchblox.com/security/data/fix/linux/ubuntu-bionic-curl-7.58.0-2ubuntu3.14.md) | Jul 20, 2021 |
| Linux | curl Ubuntu 20.04 LTS (focal) | 7.68.0-1ubuntu2.6 | [curl 7.68.0-1ubuntu2.6](https://patchblox.com/security/data/fix/linux/ubuntu-focal-curl-7.68.0-1ubuntu2.6.md) | Jul 20, 2021 |
| Linux | curl ol 8 | 0:7.61.1-22.el8 | [ELSA-2021-4511](https://patchblox.com/security/data/fix/linux/elsa-2021-4511.md) | Nov 16, 2021 |
| Linux | libcurl RHEL 8 | 0:7.61.1-22.el8 | [RHSA-2021:4511](https://patchblox.com/security/data/fix/linux/rhsa-2021-4511.md) | Nov 9, 2021 |
| Linux | libcurl ol 8 | 0:7.61.1-22.el8 | [ELSA-2021-4511](https://patchblox.com/security/data/fix/linux/elsa-2021-4511.md) | Nov 16, 2021 |
| Linux | libcurl-devel RHEL 8 | 0:7.61.1-22.el8 | [RHSA-2021:4511](https://patchblox.com/security/data/fix/linux/rhsa-2021-4511.md) | Nov 9, 2021 |
| Linux | libcurl-devel ol 8 | 0:7.61.1-22.el8 | [ELSA-2021-4511](https://patchblox.com/security/data/fix/linux/elsa-2021-4511.md) | Nov 16, 2021 |
| Linux | libcurl-minimal RHEL 8 | 0:7.61.1-22.el8 | [RHSA-2021:4511](https://patchblox.com/security/data/fix/linux/rhsa-2021-4511.md) | Nov 9, 2021 |
| Linux | libcurl-minimal ol 8 | 0:7.61.1-22.el8 | [ELSA-2021-4511](https://patchblox.com/security/data/fix/linux/elsa-2021-4511.md) | Nov 16, 2021 |
| Linux | libcurl3-gnutls Ubuntu 18.04.6 LTS (bionic) | 7.58.0-2ubuntu3.14 | [libcurl3-gnutls 7.58.0-2ubuntu3.14](https://patchblox.com/security/data/fix/linux/ubuntu-bionic-libcurl3-gnutls-7.58.0-2ubuntu3.14.md) | Jul 20, 2021 |
| Linux | libcurl3-gnutls Ubuntu 20.04 LTS (focal) | 7.68.0-1ubuntu2.6 | [libcurl3-gnutls 7.68.0-1ubuntu2.6](https://patchblox.com/security/data/fix/linux/ubuntu-focal-libcurl3-gnutls-7.68.0-1ubuntu2.6.md) | Jul 20, 2021 |
| Linux | libcurl3-nss Ubuntu 18.04.6 LTS (bionic) | 7.58.0-2ubuntu3.14 | [libcurl3-nss 7.58.0-2ubuntu3.14](https://patchblox.com/security/data/fix/linux/ubuntu-bionic-libcurl3-nss-7.58.0-2ubuntu3.14.md) | Jul 20, 2021 |
| Linux | libcurl3-nss Ubuntu 20.04 LTS (focal) | 7.68.0-1ubuntu2.6 | [libcurl3-nss 7.68.0-1ubuntu2.6](https://patchblox.com/security/data/fix/linux/ubuntu-focal-libcurl3-nss-7.68.0-1ubuntu2.6.md) | Jul 20, 2021 |
| Linux | libcurl4 Ubuntu 18.04.6 LTS (bionic) | 7.58.0-2ubuntu3.14 | [libcurl4 7.58.0-2ubuntu3.14](https://patchblox.com/security/data/fix/linux/ubuntu-bionic-libcurl4-7.58.0-2ubuntu3.14.md) | Jul 20, 2021 |
| Linux | libcurl4 Ubuntu 20.04 LTS (focal) | 7.68.0-1ubuntu2.6 | [libcurl4 7.68.0-1ubuntu2.6](https://patchblox.com/security/data/fix/linux/ubuntu-focal-libcurl4-7.68.0-1ubuntu2.6.md) | Jul 20, 2021 |

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