CVE-2018-25099
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.
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
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 Critical
CVSS: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 Critical
CVSS: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 Critical
CVSS: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 Critical
CVSS: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 Critical
CVSS: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 Critical
CVSS: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 Critical
CVSS: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
| Package | Affected | Fixed |
|---|---|---|
libcryptx-perlDebian:12 |
before 0.062-1 | 0.062-1 |
libcryptx-perlDebian:13 |
before 0.062-1 | 0.062-1 |
libcryptx-perlDebian:14 |
before 0.062-1 | 0.062-1 |
libcryptx-perlUbuntu:Pro:18.04:LTS |
before 0.056-1ubuntu0.1~esm1, plus listed versions 0.055-10.056-1 |
0.056-1ubuntu0.1~esm1 |
libcryptx-perlUbuntu: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-perlUbuntu: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-perlUbuntu: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-perlUbuntu: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-CryptXSUSE:Package Hub 15 SP5 |
before 0.80.0-bp155.2.3.1 | 0.80.0-bp155.2.3.1 |
perl-CryptXopenSUSE:Leap 15.5 |
before 0.80.0-bp155.2.3.1 | 0.80.0-bp155.2.3.1 |
perl-CryptXopenSUSE:Tumbleweed |
before 0.80.0-3.1 | 0.80.0-3.1 |
History
| Recorded | Changed | Sources |
|---|---|---|
| affected, facts | ||
| first indexed | CVE 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
github.com/DCIT/perl-CryptX/issues/47
github.com/libtom/libtomcrypt/pull/451
metacpan.org/dist/CryptX/changes
nvd.nist.gov/vuln/detail/CVE-2018-25099
github.com/advisories/GHSA-c39g-93pm-r85m
security-tracker.debian.org/tracker/CVE-2018-25099
Show 13 moreShow less
ubuntu.com/security/CVE-2018-25099
github.com/libtom/libtomcrypt/commit/2599618ca640bc5a506954f975be4109613366c6
github.com/libtom/libtomcrypt/commit/27c472654c3fba983d74debad5a8fb21247f76db
github.com/libtom/libtomcrypt/commit/fd4d8fbc0558157276229202d2883d01f7bd56d8
github.com/libtom/libtomcrypt/commit/9a1131da144ee1f93ccbcaf032f39d783495d3b9
github.com/libtom/libtomcrypt/commit/7d8567695bfb991c84f09d4d3aabc4568fa0c835
cve.org/CVERecord?id=CVE-2018-25099
ubuntu.com/security/notices/USN-8128-1
ubuntu.com/security/CVE-2025-40912
ubuntu.com/security/CVE-2025-40914
lists.opensuse.org/archives/list/[email protected]/thread/UPEJCYLFV3FPQUS5GF63SP3V7CRAO2RX
bugzilla.suse.com/1221528
suse.com/security/cve/CVE-2018-25099