CVE-2023-28508

Heap corruption in UniRPC service

HIGH

8.8

CVSS Score

Published: March 29, 2023 at 08:16 PM UTC

Updated: June 17, 2026 at 05:47 AM UTC

2 products affected across 1 vendorUniVerseUniData· also runs on 1 platform

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Severity

HIGH8.8

Exploit prediction

EPSS 0.9%

SSVC

PoC

Description

Rocket Software UniData versions prior to 8.2.4 build 3003 and UniVerse versions prior to 11.3.5 build 1001 or 12.2.1 build 2002 suffer from a heap-based overflow vulnerability, where certain input can corrupt the heap and crash the forked process.

Affected

Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.

UniData · Rocket

95%

v ≤ 8.2.4v < 8.2.43.3003

Affected range stops below 8.2.43.3003, so it looks safe — our inference, not a vendor statement

linux-linux-kernel (environment)

UniVerse · Rocket

95%

v ≤ 11.3.5v < 11.3.5.1001v < 12.2.1.200212.0.0 ≤ v ≤ 12.2.1

Affected range stops below 11.3.5.1001, so it looks safe — our inference, not a vendor statement

Affected range stops below 12.2.1.2002, so it looks safe — our inference, not a vendor statement

linux-linux-kernel (environment)

Runs on — not affected

The affected product only carries this flaw when running on these platforms. The platforms themselves are not vulnerable.

Linux Kernel · Linux

95%

Remediation

No guide yet

No remediation guidance has been written for this CVE yet, and no fixed version or vendor advisory is recorded against it.

References (1)

Third Party Advisory

Source: [email protected]

https://www.rapid7.com/blog/post/2023/03/29/multiple-vulnerabilities-in-rocket-software-unirpc-server-fixed/

SSVC — Action Prioritization

SSVCPoCNot automatableTotal impact

SSVC signals action urgency (what to patch first), separate from CVSS which measures severity.

CVSS

8.8HIGH[email protected]

Attack Vector: NETWORK
Complexity: LOW
Privileges: LOW
User Interaction: NONE
Scope: UNCHANGED
Confidentiality: HIGH
Integrity: HIGH
Availability: HIGH

Vector?

Quick Info

StatusMODIFIED

CWE

CWE-120CWE-787

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