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CVE-2018-25099

In the CryptX module before 0.062 for Perl, gcm_decrypt_verify() and...

9.8 CriticalFix available

In the CryptX module before 0.062 for Perl, gcm_decrypt_verify() and chacha20poly1305_decrypt_verify() do not verify the tag.

Attack profile

How easy it is to exploit

Attack vector
Network
Complexity
Low
Privileges needed
None
User interaction
None

What an attacker can affect

Confidentiality
High
Integrity
High
Availability
High

Exploit likelihood

0.48%Up 0.4 points since Mar 18, 2024
90%50%10%1%

What each source reports

CVE List Score used 9.8

In the CryptX module before 0.062 for Perl, gcm_decrypt_verify() and chacha20poly1305_decrypt_verify() do not verify the tag.

Record
CVE-2018-25099
CVSS 3.1
9.8 CriticalCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Weakness
CWE-347
Updated
2026-11-02
EUVDEUVD-2018-13851 9.8

In the CryptX module before 0.062 for Perl, gcm_decrypt_verify() and chacha20poly1305_decrypt_verify() do not verify the tag.

Record
EUVD-2018-13851
CVSS 3.1
9.8 CriticalCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Updated
2026-11-02
GitHub AdvisoriesGHSA-c39g-93pm-r85m 9.8

In the CryptX module before 0.062 for Perl, gcm_decrypt_verify() and...

In the CryptX module before 0.062 for Perl, gcm_decrypt_verify() and chacha20poly1305_decrypt_verify() do not verify the tag.

Record
GHSA-c39g-93pm-r85m
CVSS 3.1
9.8 CriticalCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Weakness
CWE-347
Updated
2026-11-02
NVD 9.8

In the CryptX module before 0.062 for Perl, gcm_decrypt_verify() and chacha20poly1305_decrypt_verify() do not verify the tag.

Record
CVE-2018-25099
CVSS 3.1
9.8 CriticalCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Weakness
CWE-347
Updated
2026-11-02
OSV 9.8

In the CryptX module before 0.062 for Perl, gcm_decrypt_verify() and chacha20poly1305_decrypt_verify() do not verify the tag.

Record
CVE-2018-25099
CVSS 3.1
9.8 CriticalCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Updated
2026-11-02
OSVDEBIAN-CVE-2018-25099 9.8

In the CryptX module before 0.062 for Perl, gcm_decrypt_verify() and chacha20poly1305_decrypt_verify() do not verify the tag.

Record
DEBIAN-CVE-2018-25099
CVSS 3.1
9.8 CriticalCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Updated
2026-11-02
Show 4 moreShow less
OSVUBUNTU-CVE-2018-25099 9.8

In the CryptX module before 0.062 for Perl, gcm_decrypt_verify() and chacha20poly1305_decrypt_verify() do not verify the tag.

Record
UBUNTU-CVE-2018-25099
CVSS 3.1
9.8 CriticalCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Updated
2026-11-02
OSVopenSUSE-SU-2024:0112-1 No score

Security update for perl-CryptX

This update for perl-CryptX fixes the following issues:

Updated to version 0.080:

0.080 2023-10-04 - fix #95 AES-NI troubles on MS Windows (gcc compiler) - fix #96 Tests failure with Math::BigInt >= 1.999840 - Enabled AES-NI for platforms with gcc/clang/llvm 0.079 2023-10-01 - fix #92 update libtomcrypt - bundled libtomcrypt update branch:develop (commit:1e629e6f 2023-06-22) 0.078 2023-04-28 - fix #89 Crypt::Mac::HMAC b64mac and b64umac object methods do not work

Record
openSUSE-SU-2024:0112-1
Updated
2026-11-02
OSVopenSUSE-SU-2024:13866-1 No score

perl-CryptX-0.80.0-3.1 on GA media

These are all security issues fixed in the perl-CryptX-0.80.0-3.1 package on the GA media of openSUSE Tumbleweed.

Record
openSUSE-SU-2024:13866-1
Updated
2026-11-02
OSVUSN-8128-1 No score

libcryptx-perl vulnerabilities

It was discovered that CryptX did not verify authentication tags while performing GCM and ChaCha20-Poly1305 decryption. An attacker could possibly use this issue to cause CryptX to accept modified ciphertext, leading to data integrity violations or authentication bypass. This issue only affected Ubuntu 18.04 LTS. (CVE-2018-25099)

It was discovered that CryptX included a version of the tomcrypt library that was susceptible to malformed unicode handling. An attacker could possibly use this issue to cause unexpected behavior or incorrect processing of crafted input. This issue only affected Ubuntu 18.04 LTS. (CVE-2025-40912)

It was discovered that CryptX included a version of the libtommath library that was susceptible to an integer overflow. An attacker could possibly use this issue to cause memory corruption or a denial of service. (CVE-2025-40914)

Record
USN-8128-1
Updated
2026-11-02

Affected products

Affected packages

Affected packages
PackageAffectedFixed
libcryptx-perl
Debian:12
before 0.062-1
0.062-1
libcryptx-perl
Debian:13
before 0.062-1
0.062-1
libcryptx-perl
Debian:14
before 0.062-1
0.062-1
libcryptx-perl
Ubuntu:Pro:18.04:LTS
before 0.056-1ubuntu0.1~esm1, plus listed versions
0.055-10.056-1
0.056-1ubuntu0.1~esm1
libcryptx-perl
Ubuntu:Pro:18.04:LTS
From an advisory covering 3 CVEs
before 0.056-1ubuntu0.1~esm1, plus listed versions
0.055-10.056-1
0.056-1ubuntu0.1~esm1
libcryptx-perl
Ubuntu:Pro:20.04:LTS
From an advisory covering 3 CVEs
before 0.067-1ubuntu0.1~esm1, plus listed versions
0.064-10.064-1build10.066-10.067-1
0.067-1ubuntu0.1~esm1
libcryptx-perl
Ubuntu:Pro:22.04:LTS
From an advisory covering 3 CVEs
before 0.076-1ubuntu0.1~esm1, plus listed versions
0.069-1build10.073-10.074-10.075-10.076-10.076-1build1
0.076-1ubuntu0.1~esm1
libcryptx-perl
Ubuntu:Pro:24.04:LTS
From an advisory covering 3 CVEs
before 0.080-2ubuntu0.1~esm1, plus listed versions
0.078-10.080-10.080-20.080-2build10.080-2build20.080-2build3
0.080-2ubuntu0.1~esm1
perl-CryptX
SUSE:Package Hub 15 SP5
before 0.80.0-bp155.2.3.1
0.80.0-bp155.2.3.1
perl-CryptX
openSUSE:Leap 15.5
before 0.80.0-bp155.2.3.1
0.80.0-bp155.2.3.1
perl-CryptX
openSUSE:Tumbleweed
before 0.80.0-3.1
0.80.0-3.1

History

History
RecordedChangedSources
affected, facts
first indexedCVE List, EUVD, GitHub Advisories, NVD, OSV

Dates are when Every CVE recorded each change. Upstream dates may differ.

In short

CVE-2018-25099 is a critical vulnerability (CVSS 9.8) in Dcit Perl-cryptx, published March 18, 2024. No source lists public exploit code. EPSS puts the chance of exploitation in the next 30 days at 0.48%, the 41st percentile. Fixed in libcryptx-perl 0.062-1.

References

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