← Vulnerability feed

Vulnerability record · CVE-2008-5077 · published 7 January 2009

CVE-2008-5077: Openssl improper input validation vulnerability

OOpenssl · Openssl

OpenSSL 0.9.8i and earlier does not properly check the return value from the EVP_VerifyFinal function, which allows remote attackers to bypass validation of the certificate chain via a malformed SSL/TLS signature for DSA and ECDSA keys.

5.8 CVSS 2.0 Medium EPSS 5.1% · top 7.9% CWE-20 · Improper input validation
5.8CVSS 2.0 base score
5.1%EPSS exploitation probability, 30 days
NoNot in CISA KEV
1Affected product versions listed by NVD
86References
16 Jun 2026Last modified by NVD

Description

OpenSSL 0.9.8i and earlier does not properly check the return value from the EVP_VerifyFinal function, which allows remote attackers to bypass validation of the certificate chain via a malformed SSL/TLS signature for DSA and ECDSA keys.

AV:N/AC:M/Au:N/C:N/I:P/A:P

Affected products

1 vulnerable configurations from NVD's CPE data, grouped by vendor and product.

References

LinkTags
http://lists.apple.com/archives/security-announce/2009/May/msg00002.html
http://lists.opensuse.org/opensuse-security-announce/2011-07/msg00013.html
http://lists.opensuse.org/opensuse-security-announce/2011-07/msg00014.html
http://marc.info/?l=bugtraq&m=123859864430555&w=2
http://marc.info/?l=bugtraq&m=124277349419254&w=2
http://marc.info/?l=bugtraq&m=127678688104458&w=2
http://secunia.com/advisories/33338 Vendor Advisory
http://secunia.com/advisories/33394
http://secunia.com/advisories/33436 Vendor Advisory
http://secunia.com/advisories/33557 Vendor Advisory
http://secunia.com/advisories/33673 Vendor Advisory
http://secunia.com/advisories/33765 Vendor Advisory
http://secunia.com/advisories/34211 Vendor Advisory
http://secunia.com/advisories/35074 Vendor Advisory
http://secunia.com/advisories/35108 Vendor Advisory
http://secunia.com/advisories/39005 Vendor Advisory
http://security.gentoo.org/glsa/glsa-200902-02.xml
http://slackware.com/security/viewer.php?l=slackware-security&y=2009&m=slackware-security.544796
http://sunsolve.sun.com/search/document.do?assetkey=1-66-250826-1
http://support.apple.com/kb/HT3549
http://support.avaya.com/elmodocs2/security/ASA-2009-038.htm
http://support.nortel.com/go/main.jsp?cscat=BLTNDETAIL&id=837653
http://voodoo-circle.sourceforge.net/sa/sa-20090123-01.html
http://www.ocert.org/advisories/ocert-2008-016.html
http://www.openssl.org/news/secadv_20090107.txt
http://www.redhat.com/support/errata/RHSA-2009-0004.html
http://www.securityfocus.com/archive/1/499827/100/0/threaded
http://www.securityfocus.com/archive/1/502322/100/0/threaded
http://www.securityfocus.com/bid/33150
http://www.securitytracker.com/id?1021523
http://www.us-cert.gov/cas/techalerts/TA09-133A.html US Government Resource
http://www.vmware.com/security/advisories/VMSA-2009-0004.html
http://www.vupen.com/english/advisories/2009/0040 Vendor Advisory
http://www.vupen.com/english/advisories/2009/0289 Vendor Advisory
http://www.vupen.com/english/advisories/2009/0362 Vendor Advisory
http://www.vupen.com/english/advisories/2009/0558 Vendor Advisory
http://www.vupen.com/english/advisories/2009/0904 Vendor Advisory
http://www.vupen.com/english/advisories/2009/0913 Vendor Advisory
http://www.vupen.com/english/advisories/2009/1297 Vendor Advisory
http://www.vupen.com/english/advisories/2009/1338 Vendor Advisory

Track CVE-2008-5077 inside VULONE

Watch it alongside the ransomware crews, C2 infrastructure and forum chatter that reference it, query it through the API and pull it into your SIEM over TAXII.

Start free Open in platform

Related vulnerabilities

Same products first, then exploited flaws of the same weakness class.

7.5CVE-2014-0160OpenSSL TLS/DTLS Heartbeat Extension Out-of-Bounds Read (Heartbleed)OpenSSL 1.0.1 before 1.0.1g mishandles Heartbeat Extension packets in its TLS and DTLS implementations, causing an out-of-bounds read of process memo…KEVEPSS 100%analysed10.0CVE-2009-3245Openssl improper input validation vulnerabilityOpenSSL before 0.9.8m does not check for a NULL return value from bn_wexpand function calls in (1) crypto/bn/bn_div.c, (2) crypto/bn/bn_gf2m.c, (3) c…EPSS 6.5%10.0CVE-2006-3738OpenSSL SSL_get_shared_ciphers buffer overflow via long cipher listOpenSSL versions before 0.9.7l and 0.9.8d contain a buffer overflow in the SSL_get_shared_ciphers function, triggered by a long list of ciphers. The …EPSS 49%analysed9.8CVE-2026-63073Openssl vulnerabilityIssue summary: OpenSSL CMP response validation passed an unexpected response sender distinguished name directly as the format string to `ERR_raise_da…EPSS 1.2%9.8CVE-2026-31789Openssl out-of-bounds write vulnerabilityIssue summary: Converting an excessively large OCTET STRING value to a hexadecimal string leads to a heap buffer overflow on 32 bit platforms. Impact…EPSS 0.33%9.8CVE-2022-2274OpenSSL 3.0.4 RSA AVX512IFMA memory corruptionOpenSSL 3.0.4 introduced a bug in the RSA implementation for X86_64 CPUs supporting AVX512IFMA instructions, causing 2048-bit private key operations …EPSS 46%analysed9.8CVE-2021-3711OpenSSL SM2 decryption buffer overflowOpenSSL's SM2 decryption code miscalculates the output buffer size needed by EVP_PKEY_decrypt(), so the first sizing call can return a value smaller …EPSS 88%analysed9.8CVE-2016-6309OpenSSL 1.1.0a statem use-after-free on realloc in TLS session handlingOpenSSL 1.1.0a's statem/statem.c fails to account for memory-block movement after a realloc call, leaving a dangling pointer that can be used after f…EPSS 70%analysed

Source: NIST National Vulnerability Database (record CVE-2008-5077), CISA KEV, FIRST EPSS (scores of 2026-09-26). This page is refreshed as NVD updates the record.