# CVE-2023-2650: libssl3t64: Issue summary: Processing some specially crafted ASN.1 object identifiersordata containing them may be very slow.Impa...

CVE-2023-2650 is fixed in 23 products on 1 platform, first by libnode72 12.22.9~dfsg-1ubuntu3.4, released May 29, 2023. It is not reported as exploited. Patch Radar priority: Routine.

- Web page: https://patchblox.com/security/cve/CVE-2023-2650
- Priority: Routine
- CVSS: 6.5 (Medium)
- EPSS: 0.7536
- CISA KEV: not listed
- Exploited (vendor report): no
- Publicly disclosed: no
- Published: May 29, 2023

## Description

Issue summary: Processing some specially crafted ASN.1 object identifiersordata containing them may be very slow.Impact summary: Applications that use OBJ_obj2txt() directly, or use any ofthe OpenSSL subsystems OCSP, PKCS7/SMIME, CMS, CMP/CRMF or TS with nomessagesize limit may experience notable to very long delays when processing thosemessages, which may lead to a Denial of Service.An OBJECT IDENTIFIER is composed of a series of numbers - sub-identifiers -most of which have no size limit.  OBJ_obj2txt() may be used to translatean ASN.1 OBJECT IDENTIFIER given in DER encoding form (using the OpenSSLtype ASN1_OBJECT) to its canonical numeric text form, which are thesub-identifiers of the OBJECT IDENTIFIER in decimal form, separated byperiods.When one of the sub-identifiers in the OBJECT IDENTIFIER is very large(these are sizes that are seen as absurdly large, taking up tens orhundredsof KiBs), the translation to a decimal number in text may take a very longtime.  The time complexity is O(n^2) with 'n' being the size of thesub-identifiers in bytes (*).With OpenSSL 3.0, support to fetch cryptographic algorithms using names /identifiers in string form was introduced.  This includes using OBJECTIDENTIFIERs in canonical numeric text form as identifiers for fetchingalgorithms.Such OBJECT IDENTIFIERs may be received through the ASN.1 structureAlgorithmIdentifier, which is commonly used in multiple protocols tospecifywhat cryptographic algorithm should be used to sign or verify, encrypt ordecrypt, or digest passed data.Applications that call OBJ_obj2txt() directly with untrusted data areaffected, with any version of OpenSSL.  If the use is for the mere purposeof display, the severity is considered low.In OpenSSL 3.0 and newer, this affects the subsystems OCSP, PKCS7/SMIME,CMS, CMP/CRMF or TS.  It also impacts anything that processes X.509certificates, including simple things like verifying its signature.The impact on TLS is relatively low, because all versions of OpenSSL have a100KiB limit on the peer's certificate chain.  Additionally, this onlyimpacts clients, or servers that have explicitly enabled clientauthentication.In OpenSSL 1.1.1 and 1.0.2, this only affects displaying diverse objects,such as X.509 certificates.  This is assumed to not happen in such a waythat it would cause a Denial of Service, so these versions are considerednot affected by this issue in such a way that it would be cause forconcern,and the severity is therefore considered low.

## Where it's fixed

| Platform | Product | Fixed in | Fix | Released |
|---|---|---|---|---|
| Linux | edk2-aarch64 RHEL 9 | 0:20230524-3.el9 | [RHSA-2023:6330](https://patchblox.com/security/data/fix/linux/rhsa-2023-6330.md) | Nov 7, 2023 |
| Linux | edk2-aarch64 almalinux 9 | 20230524-3.el9 | [ALSA-2023:6330](https://patchblox.com/security/data/fix/linux/alsa-2023-6330.md) | Nov 7, 2023 |
| Linux | edk2-aarch64 ol 9 | 0:20230524-3.el9 | [ELSA-2023-6330](https://patchblox.com/security/data/fix/linux/elsa-2023-6330.md) | Nov 11, 2023 |
| Linux | edk2-ovmf RHEL 9 | 0:20230524-3.el9 | [RHSA-2023:6330](https://patchblox.com/security/data/fix/linux/rhsa-2023-6330.md) | Nov 7, 2023 |
| Linux | edk2-ovmf almalinux 9 | 20230524-3.el9 | [ALSA-2023:6330](https://patchblox.com/security/data/fix/linux/alsa-2023-6330.md) | Nov 7, 2023 |
| Linux | edk2-ovmf ol 9 | 0:20230524-3.el9 | [ELSA-2023-6330](https://patchblox.com/security/data/fix/linux/elsa-2023-6330.md) | Nov 11, 2023 |
| Linux | edk2-tools RHEL 9 | 0:20230524-3.el9 | [RHSA-2023:6330](https://patchblox.com/security/data/fix/linux/rhsa-2023-6330.md) | Nov 7, 2023 |
| Linux | edk2-tools almalinux 9 | 20230524-3.el9 | [ALSA-2023:6330](https://patchblox.com/security/data/fix/linux/alsa-2023-6330.md) | Nov 7, 2023 |
| Linux | edk2-tools ol 9 | 0:20230524-3.el9 | [ELSA-2023-6330](https://patchblox.com/security/data/fix/linux/elsa-2023-6330.md) | Nov 11, 2023 |
| Linux | edk2-tools-doc RHEL 9 | 0:20230524-3.el9 | [RHSA-2023:6330](https://patchblox.com/security/data/fix/linux/rhsa-2023-6330.md) | Nov 7, 2023 |
| Linux | edk2-tools-doc almalinux 9 | 20230524-3.el9 | [ALSA-2023:6330](https://patchblox.com/security/data/fix/linux/alsa-2023-6330.md) | Nov 7, 2023 |
| Linux | edk2-tools-doc ol 9 | 0:20230524-3.el9 | [ELSA-2023-6330](https://patchblox.com/security/data/fix/linux/elsa-2023-6330.md) | Nov 11, 2023 |
| Linux | libnode72 Ubuntu 22.04.1 LTS (jammy) | 12.22.9~dfsg-1ubuntu3.4 | [libnode72 12.22.9~dfsg-1ubuntu3.4](https://patchblox.com/security/data/fix/linux/ubuntu-jammy-libnode72-12.22.9-dfsg-1ubuntu3.4.md) | May 29, 2023 |
| Linux | libssl1.0.0 Ubuntu 18.04.6 LTS (bionic) | 1.0.2n-1ubuntu5.13 | [libssl1.0.0 1.0.2n-1ubuntu5.13](https://patchblox.com/security/data/fix/linux/ubuntu-bionic-libssl1.0.0-1.0.2n-1ubuntu5.13.md) | May 29, 2023 |
| Linux | libssl1.1 Ubuntu 18.04.6 LTS (bionic) | 1.1.1-1ubuntu2.1~18.04.23 | [libssl1.1 1.1.1-1ubuntu2.1~18.04.23](https://patchblox.com/security/data/fix/linux/ubuntu-bionic-libssl1.1-1.1.1-1ubuntu2.1-18.04.23.md) | May 29, 2023 |
| Linux | libssl1.1 Ubuntu 20.04 LTS (focal) | 1.1.1f-1ubuntu2.19 | [libssl1.1 1.1.1f-1ubuntu2.19](https://patchblox.com/security/data/fix/linux/ubuntu-focal-libssl1.1-1.1.1f-1ubuntu2.19.md) | May 29, 2023 |
| Linux | libssl3 Ubuntu 22.04.1 LTS (jammy) | 3.0.2-0ubuntu1.10 | [libssl3 3.0.2-0ubuntu1.10](https://patchblox.com/security/data/fix/linux/ubuntu-jammy-libssl3-3.0.2-0ubuntu1.10.md) | May 29, 2023 |
| Linux | libssl3t64 Ubuntu 24.10 (oracular) | 3.0.8-1ubuntu3 | [libssl3t64 3.0.8-1ubuntu3](https://patchblox.com/security/data/fix/linux/ubuntu-oracular-libssl3t64-3.0.8-1ubuntu3.md) | May 30, 2023 |
| Linux | libssl3t64 Ubuntu 25.04 (plucky) | 3.0.8-1ubuntu3 | [libssl3t64 3.0.8-1ubuntu3](https://patchblox.com/security/data/fix/linux/ubuntu-plucky-libssl3t64-3.0.8-1ubuntu3.md) | May 30, 2023 |
| Linux | nodejs Ubuntu 22.04.1 LTS (jammy) | 12.22.9~dfsg-1ubuntu3.4 | [nodejs 12.22.9~dfsg-1ubuntu3.4](https://patchblox.com/security/data/fix/linux/ubuntu-jammy-nodejs-12.22.9-dfsg-1ubuntu3.4.md) | May 29, 2023 |
| Linux | openssl Debian 12.15 (bookworm) | 3.0.9-1 | [DEBIAN-CVE-2023-2650](https://patchblox.com/security/data/fix/linux/debian-cve-2023-2650.md) | May 30, 2023 |
| Linux | openssl Debian 13.5 (trixie) | 3.0.9-1 | [DEBIAN-CVE-2023-2650](https://patchblox.com/security/data/fix/linux/debian-cve-2023-2650.md) | May 30, 2023 |
| Linux | openssl Debian 14 | 3.0.9-1 | [DEBIAN-CVE-2023-2650](https://patchblox.com/security/data/fix/linux/debian-cve-2023-2650.md) | May 30, 2023 |
| Linux | openssl RHEL 9 | 1:3.0.7-16.el9_2 | [RHSA-2023:3722](https://patchblox.com/security/data/fix/linux/rhsa-2023-3722.md) | Jun 21, 2023 |
| Linux | openssl Ubuntu 18.04.6 LTS (bionic) | 1.1.1-1ubuntu2.1~18.04.23 | [openssl 1.1.1-1ubuntu2.1~18.04.23](https://patchblox.com/security/data/fix/linux/ubuntu-bionic-openssl-1.1.1-1ubuntu2.1-18.04.23.md) | May 29, 2023 |
| Linux | openssl Ubuntu 20.04 LTS (focal) | 1.1.1f-1ubuntu2.19 | [openssl 1.1.1f-1ubuntu2.19](https://patchblox.com/security/data/fix/linux/ubuntu-focal-openssl-1.1.1f-1ubuntu2.19.md) | May 29, 2023 |
| Linux | openssl Ubuntu 22.04.1 LTS (jammy) | 3.0.2-0ubuntu1.10 | [openssl 3.0.2-0ubuntu1.10](https://patchblox.com/security/data/fix/linux/ubuntu-jammy-openssl-3.0.2-0ubuntu1.10.md) | May 29, 2023 |
| Linux | openssl Ubuntu 24.10 (oracular) | 3.0.8-1ubuntu3 | [openssl 3.0.8-1ubuntu3](https://patchblox.com/security/data/fix/linux/ubuntu-oracular-openssl-3.0.8-1ubuntu3.md) | May 30, 2023 |
| Linux | openssl Ubuntu 25.04 (plucky) | 3.0.8-1ubuntu3 | [openssl 3.0.8-1ubuntu3](https://patchblox.com/security/data/fix/linux/ubuntu-plucky-openssl-3.0.8-1ubuntu3.md) | May 30, 2023 |
| Linux | openssl almalinux 9 | 1:3.0.7-16.el9_2 | [ALSA-2023:3722](https://patchblox.com/security/data/fix/linux/alsa-2023-3722.md) | Jun 21, 2023 |
| Linux | openssl amzn 2023 | 1:3.0.8-1.amzn2023.0.3 | [ALAS2023-2023-222](https://patchblox.com/security/data/fix/linux/alas2023-2023-222.md) | Jun 21, 2023 |
| Linux | openssl ol 9 | 2:3.0.7-16.0.1.ksplice1.el9_2 | [ELSA-2023-12768](https://patchblox.com/security/data/fix/linux/elsa-2023-12768.md) | Aug 31, 2023 |
| Linux | openssl-debuginfo amzn 2023 | 1:3.0.8-1.amzn2023.0.3 | [ALAS2023-2023-222](https://patchblox.com/security/data/fix/linux/alas2023-2023-222.md) | Jun 21, 2023 |
| Linux | openssl-debugsource amzn 2023 | 1:3.0.8-1.amzn2023.0.3 | [ALAS2023-2023-222](https://patchblox.com/security/data/fix/linux/alas2023-2023-222.md) | Jun 21, 2023 |
| Linux | openssl-devel RHEL 9 | 1:3.0.7-16.el9_2 | [RHSA-2023:3722](https://patchblox.com/security/data/fix/linux/rhsa-2023-3722.md) | Jun 21, 2023 |
| Linux | openssl-devel almalinux 9 | 1:3.0.7-16.el9_2 | [ALSA-2023:3722](https://patchblox.com/security/data/fix/linux/alsa-2023-3722.md) | Jun 21, 2023 |
| Linux | openssl-devel amzn 2023 | 1:3.0.8-1.amzn2023.0.3 | [ALAS2023-2023-222](https://patchblox.com/security/data/fix/linux/alas2023-2023-222.md) | Jun 21, 2023 |
| Linux | openssl-devel ol 9 | 2:3.0.7-16.0.1.ksplice1.el9_2 | [ELSA-2023-12768](https://patchblox.com/security/data/fix/linux/elsa-2023-12768.md) | Aug 31, 2023 |
| Linux | openssl-libs RHEL 9 | 1:3.0.7-16.el9_2 | [RHSA-2023:3722](https://patchblox.com/security/data/fix/linux/rhsa-2023-3722.md) | Jun 21, 2023 |
| Linux | openssl-libs almalinux 9 | 1:3.0.7-16.el9_2 | [ALSA-2023:3722](https://patchblox.com/security/data/fix/linux/alsa-2023-3722.md) | Jun 21, 2023 |
| Linux | openssl-libs amzn 2023 | 1:3.0.8-1.amzn2023.0.3 | [ALAS2023-2023-222](https://patchblox.com/security/data/fix/linux/alas2023-2023-222.md) | Jun 21, 2023 |
| Linux | openssl-libs ol 9 | 2:3.0.7-16.0.1.ksplice1.el9_2 | [ELSA-2023-12768](https://patchblox.com/security/data/fix/linux/elsa-2023-12768.md) | Aug 31, 2023 |
| Linux | openssl-libs-debuginfo amzn 2023 | 1:3.0.8-1.amzn2023.0.3 | [ALAS2023-2023-222](https://patchblox.com/security/data/fix/linux/alas2023-2023-222.md) | Jun 21, 2023 |
| Linux | openssl-perl RHEL 9 | 1:3.0.7-16.el9_2 | [RHSA-2023:3722](https://patchblox.com/security/data/fix/linux/rhsa-2023-3722.md) | Jun 21, 2023 |
| Linux | openssl-perl almalinux 9 | 1:3.0.7-16.el9_2 | [ALSA-2023:3722](https://patchblox.com/security/data/fix/linux/alsa-2023-3722.md) | Jun 21, 2023 |
| Linux | openssl-perl amzn 2023 | 1:3.0.8-1.amzn2023.0.3 | [ALAS2023-2023-222](https://patchblox.com/security/data/fix/linux/alas2023-2023-222.md) | Jun 21, 2023 |
| Linux | openssl-perl ol 9 | 2:3.0.7-16.0.1.ksplice1.el9_2 | [ELSA-2023-12768](https://patchblox.com/security/data/fix/linux/elsa-2023-12768.md) | Aug 31, 2023 |
| Linux | openssl1.0 Ubuntu 18.04.6 LTS (bionic) | 1.0.2n-1ubuntu5.13 | [openssl1.0 1.0.2n-1ubuntu5.13](https://patchblox.com/security/data/fix/linux/ubuntu-bionic-openssl1.0-1.0.2n-1ubuntu5.13.md) | May 29, 2023 |
| Linux | ovmf Ubuntu 22.04.1 LTS (jammy) | 2022.02-3ubuntu0.22.04.4 | [ovmf 2022.02-3ubuntu0.22.04.4](https://patchblox.com/security/data/fix/linux/ubuntu-jammy-ovmf-2022.02-3ubuntu0.22.04.4.md) | Aug 12, 2025 |
| Linux | ovmf-ia32 Ubuntu 22.04.1 LTS (jammy) | 2022.02-3ubuntu0.22.04.4 | [ovmf-ia32 2022.02-3ubuntu0.22.04.4](https://patchblox.com/security/data/fix/linux/ubuntu-jammy-ovmf-ia32-2022.02-3ubuntu0.22.04.4.md) | Aug 12, 2025 |
| Linux | qemu-efi Ubuntu 22.04.1 LTS (jammy) | 2022.02-3ubuntu0.22.04.4 | [qemu-efi 2022.02-3ubuntu0.22.04.4](https://patchblox.com/security/data/fix/linux/ubuntu-jammy-qemu-efi-2022.02-3ubuntu0.22.04.4.md) | Aug 12, 2025 |
| Linux | qemu-efi-aarch64 Ubuntu 22.04.1 LTS (jammy) | 2022.02-3ubuntu0.22.04.4 | [qemu-efi-aarch64 2022.02-3ubuntu0.22.04.4](https://patchblox.com/security/data/fix/linux/ubuntu-jammy-qemu-efi-aarch64-2022.02-3ubuntu0.22.04.4.md) | Aug 12, 2025 |
| Linux | qemu-efi-arm Ubuntu 22.04.1 LTS (jammy) | 2022.02-3ubuntu0.22.04.4 | [qemu-efi-arm 2022.02-3ubuntu0.22.04.4](https://patchblox.com/security/data/fix/linux/ubuntu-jammy-qemu-efi-arm-2022.02-3ubuntu0.22.04.4.md) | Aug 12, 2025 |

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