CVE-2013-7488Public exploitNetwork attack vector

Remote process hang via unchecked ASN.1 tag scan

Published Apr 7, 2020 · Updated Aug 6, 2024

Infinite-loop denial of service in Convert::ASN1 through 0.27 allows remote attackers to hang a consuming process with malformed ASN.1 data. The _scan_indef routine reads high-tag-number continuation bytes past the input boundary because its tag-scanning loop lacks an end-position check. Any remotely reachable application that passes attacker-controlled BER or DER data to the decoder can consume CPU indefinitely, interrupting that application without affecting confidentiality or integrity.

CVSS severity7.5
High
EPSS probability4.26%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
Coverage for this vulnerability

See if you're affected

Explore vulnerability checks for your environment with Hinoki.

Book a demo

Summary

What happened

Infinite-loop denial of service in Convert::ASN1 through 0.27 allows remote attackers to hang a consuming process with malformed ASN.1 data. The _scan_indef routine reads high-tag-number continuation bytes past the input boundary because its tag-scanning loop lacks an end-position check. Any remotely reachable application that passes attacker-controlled BER or DER data to the decoder can consume CPU indefinitely, interrupting that application without affecting confidentiality or integrity.

The record

CVE
CVE-2013-7488
Published
Apr 7, 2020
Updated
Aug 6, 2024
Vendor
Unknown vendor
Product
Unknown product
Classifications
CWE-835, T1499.004
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Apr 7, 2020CVE publishedPublication date reported by the CVE source.
  2. Aug 6, 2024Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

Compare your product and version with the public record. A matching version still requires validation against your environment.

Is a vulnerable build present?

Affected buildAffected product and version details are unavailable.

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

Affected products and versions are unavailable in this record.

Published CVSS scores

7.5NIST NVDCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
5.0NIST NVDAV:N/AC:L/Au:N/C:N/I:N/A:P

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

Daily unique IPsNo honeypot observations are available for this CVE in the selected window.

No observations available

Sep 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitPublished

Weakness, pattern, technique

CWE-835Loop with Unreachable Exit Condition ('Infinite Loop')
T1499.004Application or System Exploitation

Public exploit references

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

See the directory against your own environment.

Your stack

Check the software in your environment

Book a demo to see how Hinoki identifies affected software and validates exploitability in your environment.

Book a demo