CVE-2008-1950: Integer signedness error in the _gnutls_ciphertext2compressed function in lib/gnutls_cipher.c in libgnutls in GnuTLS before 2.2.4 allows…
Noroxi assessment
Priority: Monitor (action score 21/100)
- The sources we track (CISA KEV, Exploit-DB, Metasploit, Nuclei, GitHub) show no public exploit code or exploitation in the wild.
- Probability of exploitation in the next 30 days: 4.9% (FIRST EPSS); higher than 92.3% of all records.
- No special conditions are required; it is repeatable.
- Fixed version: gnutls13 (Debian:4.0) 1.4.4-3+etch1; gnutls (openSUSE:Tumbleweed) 3.7.2-1.2; gnutls (Red Hat:enterprise_linux:4::as) 0:1.0.20-4.el4_6.
Low priority for now. Upgrade to gnutls13 (Debian:4.0) 1.4.4-3+etch1; gnutls (openSUSE:Tumbleweed) 3.7.2-1.2; gnutls (Red Hat:enterprise_linux:4::as) 0:1.0.20-4.el4_6 or later.
Generated automatically from the record's data: CVSS (NVD and CNA), CISA KEV and SSVC, FIRST EPSS, exploit sources, fixed versions. How we calculate it
Primary sources: NVD · CVE.org · FIRST EPSS
Integer signedness error in the _gnutls_ciphertext2compressed function in lib/gnutls_cipher.c in libgnutls in GnuTLS before 2.2.4 allows remote attackers to cause a denial of service (buffer over-read and crash) via a certain integer value in the Random field in an encrypted Client Hello message within a TLS record with an invalid Record Length, which leads to an invalid cipher padding length, aka GNUTLS-SA-2008-1-3.
- Published
- May 21, 2008
- Updated
- Jun 16, 2026
- EPSS
- 4.9% · 92th percentile
- CWE
- CWE-189
Report tools
Action score
21
Low priority for now.
- CVSS
- 20 / 40 · 5.0 / 10
- CISA KEV
- 0 / 30 · Not listed
- EPSS
- 1 / 30 · 4.9%
Get told when this record changes
- Not in KEV: no record of exploitation in the wild
- No public exploit code on record
- A fix has been released
If any of these changes, we'll tell you in the daily email digest.
Check your server's TLS configurationRun the SSL check
Is your version affected? Check itNoroxi analysis
What does it mean in your environment?
The assessment above is generated automatically from the record's data; it doesn't know your environment. Our team verifies on your systems whether this vulnerability is actually exploitable and which mitigation is enough.
We use this product, ask for helpAffected systems
Is your version affected?
Pick the product and type the version you run. It's compared with this record's version ranges in your browser; the version isn't sent anywhere.
| Vendor | Product | CPE |
|---|---|---|
| gnu | gnutls | cpe:2.3:a:gnu:gnutls |
Check your server's TLS configuration
The GnuTLS version can't be seen from outside; the free SSL checker tests your certificate, enabled TLS versions and weak ciphers. Confirm the version on your server with the package manager.
Run the SSL checkAffected versions
NVD version ranges (for catalog products). Add the product to your stack with a version and matching uses these.
- gnu gnutls1.0.18
- gnu gnutls1.0.19
- gnu gnutls1.0.20
- gnu gnutls1.0.21
- gnu gnutls1.0.22
- gnu gnutls1.0.23
- gnu gnutls1.0.24
- gnu gnutls1.0.25
+12 more rows
- gnu gnutls1.1.13
- gnu gnutls1.1.14
- gnu gnutls1.1.15
- gnu gnutls1.1.16
- gnu gnutls1.1.17
- gnu gnutls1.1.18
- gnu gnutls1.1.19
- gnu gnutls1.1.20
- gnu gnutls1.1.21
- gnu gnutls1.1.22
- gnu gnutls1.1.23
- gnu gnutls1.2.0
Package-level exposure
OSV and GitHub Advisory data: ecosystem, package and range. SBOM matching uses this table.
| Ecosystem | Package | Affected range | Fix |
|---|---|---|---|
| Debian:4.0 | gnutls13 | before 1.4.4-3+etch1 | 1.4.4-3+etch1 |
| openSUSE:Tumbleweed | gnutls | before 3.7.2-1.2 | 3.7.2-1.2 |
| Red Hat:enterprise_linux:4::as | gnutls | before 0:1.0.20-4.el4_6 | 0:1.0.20-4.el4_6 |
| Red Hat:enterprise_linux:4::as | gnutls-debuginfo | before 0:1.0.20-4.el4_6 | 0:1.0.20-4.el4_6 |
| Red Hat:enterprise_linux:4::as | gnutls-devel | before 0:1.0.20-4.el4_6 | 0:1.0.20-4.el4_6 |
| Red Hat:enterprise_linux:5::client | gnutls-utils | before 0:1.4.1-3.el5_1 | 0:1.4.1-3.el5_1 |
| Red Hat:enterprise_linux:5::client_workstation | gnutls | before 0:1.4.1-3.el5_1 | 0:1.4.1-3.el5_1 |
| Red Hat:enterprise_linux:5::client_workstation | gnutls-debuginfo | before 0:1.4.1-3.el5_1 | 0:1.4.1-3.el5_1 |
| Red Hat:enterprise_linux:5::client_workstation | gnutls-devel | before 0:1.4.1-3.el5_1 | 0:1.4.1-3.el5_1 |
Same product
gnu: all recordsOther highest-scoring records for the same primary product.
- CVE-2017-5334Double free vulnerability in the gnutls_x509_ext_import_proxy function in GnuTLS before 3.3.26 and 3.5.x before 3.5.8 allows remote…49Plan
- CVE-2019-3829A vulnerability was found in gnutls versions from 3.5.8 before 3.6.7.48Plan
- CVE-2008-1948The _gnutls_server_name_recv_params function in lib/ext_server_name.c in libgnutls in gnutls-serv in GnuTLS before 2.2.4 does not properly…44Plan
Published before and after this one in the same product
- ← EarlierCVE-2006-4790Sep 14, 2006 · verify.c in GnuTLS before 1.4.4, when using an RSA key with exponent 3, does not properly handle excess data in the…21Monitor
- ← EarlierCVE-2008-1949May 21, 2008 · The _gnutls_recv_client_kx_message function in lib/gnutls_kx.c in libgnutls in gnutls-serv in GnuTLS before 2.2.4 continues to process…39Monitor
- Later →CVE-2008-2377Aug 8, 2008 · Use-after-free vulnerability in the _gnutls_handshake_hash_buffers_clear function in lib/gnutls_handshake.c in libgnutls in GnuTLS 2.3.5…32Monitor
Remediation
Which version to upgrade to
Fix versions compiled from the vendor, package registries and Microsoft. Verify the vendor's note before upgrading.
| Product / package | Fixed version | Source |
|---|---|---|
| debian:gnutls13 | 1.4.4-3+etch1 · Debian:4.0 | Package registry (OSV) |
| opensuse:gnutls | 3.7.2-1.2 · openSUSE:Tumbleweed | Package registry (OSV) |
| red hat:gnutls | 0:1.4.1-3.el5_1 · Red Hat:enterprise_linux:5::client_workstation | Package registry (OSV) |
| red hat:gnutls-debuginfo | 0:1.4.1-3.el5_1 · Red Hat:enterprise_linux:5::client_workstation | Package registry (OSV) |
| red hat:gnutls-devel | 0:1.4.1-3.el5_1 · Red Hat:enterprise_linux:5::client_workstation | Package registry (OSV) |
| red hat:gnutls-utils | 0:1.4.1-3.el5_1 · Red Hat:enterprise_linux:5::client | Package registry (OSV) |
Exploit status
No known public exploit
No public exploit has been observed yet. That doesn't mean you're safe, only that the bar is a little higher.
Research context
For pentesters and researchers: attack profile, score disagreement, timeline, patch commits, credits, variant and chain candidates, bug bounty scope. All derived from existing data; no exploit code.
Timeline
From publication to today: proof of concept, Metasploit module, CISA KEV and fix record. Dates are as reported by the sources.
No dated events beyond publication.
Not on record for this CVE: EPSS history · patch commit or PR link · researcher credit · variant or chain candidate · public bounty program.
Technical details
Attack conditions
- No special conditions are required; it is repeatable.
If successful
- Confidentiality
- none
- Integrity
- none
- Availability
- P · the service can be disrupted
- Attack complexity
- Low
- Confidentiality impact
- None
- Integrity impact
- None
- Availability impact
- P
Weakness class (CWE)
CWE-189 · Numeric ErrorsCVSS vector
AV:N/AC:L/Au:N/C:N/I:N/A:P
nvd-primary
Attack context
MITRE CAPEC attack patterns and ATT&CK techniques for this weakness class (CWE). A starting point for detection rules and threat hunting.
MITRE has no CAPEC/ATT&CK mapping for this CWE.
Change log (1)
- Fix✗ → ✓
For records you follow, these changes also arrive as notifications. →
References
Show all references (19 more)Show less
- lists.gnu.org/archive/html/gnutls-devel/2008-05/msg00051.html
- lists.gnu.org/archive/html/gnutls-devel/2008-05/msg00055.html
- lists.gnu.org/archive/html/gnutls-devel/2008-05/msg00060.html
- lists.opensuse.org/opensuse-security-announce/2008-09/msg00003.html
- secunia.com/advisories/30287
- secunia.com/advisories/30302
- secunia.com/advisories/30317
- secunia.com/advisories/30324
- secunia.com/advisories/30330
- secunia.com/advisories/30331
- secunia.com/advisories/30338
- secunia.com/advisories/30355
- secunia.com/advisories/31939
- security.gentoo.org/glsa/glsa-200805-20.xml
- securityreason.com/securityalert/3902
- sourceforge.net/project/shownotes.php?release_id=600646&group_id=21558
- wiki.rpath.com/wiki/Advisories:rPSA-2008-0174
- www.cert.fi/haavoittuvuudet/advisory-gnutls.html
- www.debian.org/security/2008/dsa-1581
Vendor advisories and official records. Exploit/PoC links are deliberately left out.